./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s52if.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/s52if.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 adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:57:00,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:57:00,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:57:00,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:57:00,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:57:00,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:57:00,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:57:00,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:57:00,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:57:00,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:57:00,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:57:00,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:57:00,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:57:00,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:57:00,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:57:00,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:57:00,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:57:00,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:57:00,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:57:00,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:57:00,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:57:00,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:57:00,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:57:00,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:57:00,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:57:00,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:57:00,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:57:00,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:57:00,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:57:00,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:57:00,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:57:00,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:57:00,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:57:00,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:57:00,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:57:00,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:57:00,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:57:00,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:57:00,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:57:00,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:57:00,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:57:00,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:57:00,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 [2024-11-11 15:57:00,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:57:00,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:57:01,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:57:01,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:57:01,005 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:57:01,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s52if.c [2024-11-11 15:57:02,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:57:02,707 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:57:02,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s52if.c [2024-11-11 15:57:02,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e0a487e/49e2947c88ac473ba27afc046f2a495d/FLAG3b5f66f57 [2024-11-11 15:57:02,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e0a487e/49e2947c88ac473ba27afc046f2a495d [2024-11-11 15:57:02,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:57:02,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:57:02,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:57:02,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:57:02,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:57:02,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:57:02" (1/1) ... [2024-11-11 15:57:02,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590273d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:02, skipping insertion in model container [2024-11-11 15:57:02,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:57:02" (1/1) ... [2024-11-11 15:57:02,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:57:02,933 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/s52if.c[588,601] [2024-11-11 15:57:02,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:57:02,981 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:57:02,994 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/s52if.c[588,601] [2024-11-11 15:57:03,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:57:03,020 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:57:03,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03 WrapperNode [2024-11-11 15:57:03,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:57:03,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:57:03,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:57:03,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:57:03,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,060 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2024-11-11 15:57:03,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:57:03,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:57:03,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:57:03,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:57:03,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,093 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 6, 8, 9]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8, 0]. The 6 writes are split as follows [0, 3, 0, 3]. [2024-11-11 15:57:03,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:57:03,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:57:03,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:57:03,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:57:03,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (1/1) ... [2024-11-11 15:57:03,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:57:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:03,142 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 15:57:03,146 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 15:57:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 15:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:57:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:57:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:57:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:57:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:57:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 15:57:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:57:03,268 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:57:03,269 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:57:03,461 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-11 15:57:03,461 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:57:03,472 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:57:03,472 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:57:03,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:57:03 BoogieIcfgContainer [2024-11-11 15:57:03,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:57:03,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:57:03,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:57:03,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:57:03,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:57:02" (1/3) ... [2024-11-11 15:57:03,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b93a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:57:03, skipping insertion in model container [2024-11-11 15:57:03,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:57:03" (2/3) ... [2024-11-11 15:57:03,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b93a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:57:03, skipping insertion in model container [2024-11-11 15:57:03,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:57:03" (3/3) ... [2024-11-11 15:57:03,480 INFO L112 eAbstractionObserver]: Analyzing ICFG s52if.c [2024-11-11 15:57:03,498 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:57:03,498 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:57:03,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:57:03,560 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;@5c33f6d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:57:03,560 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:57:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 15:57:03,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:03,571 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:03,572 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:03,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2024-11-11 15:57:03,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545807209] [2024-11-11 15:57:03,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:03,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:03,801 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 15:57:03,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545807209] [2024-11-11 15:57:03,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545807209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:57:03,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:57:03,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 15:57:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320373626] [2024-11-11 15:57:03,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:57:03,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 15:57:03,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 15:57:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:57:03,845 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 15:57:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:03,860 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2024-11-11 15:57:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 15:57:03,862 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-11 15:57:03,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:03,869 INFO L225 Difference]: With dead ends: 42 [2024-11-11 15:57:03,869 INFO L226 Difference]: Without dead ends: 19 [2024-11-11 15:57:03,872 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 15:57:03,875 INFO L435 NwaCegarLoop]: 28 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, 28 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 15:57:03,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:57:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-11 15:57:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-11 15:57:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 15:57:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-11 15:57:03,904 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2024-11-11 15:57:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:03,904 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-11 15:57:03,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 15:57:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-11 15:57:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 15:57:03,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:03,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:03,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:57:03,907 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:03,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2024-11-11 15:57:03,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:03,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556971728] [2024-11-11 15:57:03,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:04,107 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 15:57:04,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556971728] [2024-11-11 15:57:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556971728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:57:04,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:57:04,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:57:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100323615] [2024-11-11 15:57:04,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:57:04,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:57:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:57:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:57:04,111 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 15:57:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:04,206 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-11-11 15:57:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:57:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-11 15:57:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:04,207 INFO L225 Difference]: With dead ends: 39 [2024-11-11 15:57:04,208 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 15:57:04,208 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 15:57:04,210 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:04,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 15:57:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-11 15:57:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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 15:57:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-11 15:57:04,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2024-11-11 15:57:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:04,218 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-11 15:57:04,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 15:57:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-11 15:57:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-11 15:57:04,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:04,220 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:04,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 15:57:04,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:04,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:04,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2024-11-11 15:57:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479703779] [2024-11-11 15:57:04,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:04,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:04,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479703779] [2024-11-11 15:57:04,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479703779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129776623] [2024-11-11 15:57:04,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:04,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:04,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:04,856 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 15:57:04,858 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 15:57:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:04,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 15:57:04,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:05,022 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 15:57:05,170 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 19 treesize of output 11 [2024-11-11 15:57:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:05,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:05,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129776623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:05,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-11 15:57:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134465895] [2024-11-11 15:57:05,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:05,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-11 15:57:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-11 15:57:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-11 15:57:05,404 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:05,913 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-11 15:57:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-11 15:57:05,914 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-11 15:57:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:05,915 INFO L225 Difference]: With dead ends: 48 [2024-11-11 15:57:05,917 INFO L226 Difference]: Without dead ends: 44 [2024-11-11 15:57:05,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2024-11-11 15:57:05,919 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:05,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 53 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:57:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-11 15:57:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-11-11 15:57:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-11 15:57:05,934 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21 [2024-11-11 15:57:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:05,935 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-11 15:57:05,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-11 15:57:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-11 15:57:05,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:05,936 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:05,954 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 15:57:06,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:06,141 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:06,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2024-11-11 15:57:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246467625] [2024-11-11 15:57:06,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246467625] [2024-11-11 15:57:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246467625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677032204] [2024-11-11 15:57:06,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:06,438 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 15:57:06,441 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 15:57:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:06,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-11 15:57:06,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:06,575 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 15:57:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:06,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:06,664 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 27 treesize of output 23 [2024-11-11 15:57:06,678 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-11 15:57:06,679 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 24 treesize of output 16 [2024-11-11 15:57:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677032204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:06,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-11 15:57:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984740323] [2024-11-11 15:57:06,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:06,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:57:06,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:57:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:57:06,695 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 15:57:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:06,889 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-11-11 15:57:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 15:57:06,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) Word has length 21 [2024-11-11 15:57:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:06,891 INFO L225 Difference]: With dead ends: 86 [2024-11-11 15:57:06,891 INFO L226 Difference]: Without dead ends: 74 [2024-11-11 15:57:06,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-11 15:57:06,892 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:06,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 105 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-11 15:57:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2024-11-11 15:57:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2024-11-11 15:57:06,903 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21 [2024-11-11 15:57:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:06,903 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2024-11-11 15:57:06,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 15:57:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2024-11-11 15:57:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-11 15:57:06,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:06,904 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:06,922 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 15:57:07,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-11 15:57:07,105 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:07,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1592625659, now seen corresponding path program 1 times [2024-11-11 15:57:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:07,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889761437] [2024-11-11 15:57:07,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:07,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:07,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:07,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889761437] [2024-11-11 15:57:07,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889761437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:07,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789108057] [2024-11-11 15:57:07,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:07,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:07,290 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 15:57:07,291 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 15:57:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:07,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-11 15:57:07,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:07,361 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 15:57:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:07,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:07,409 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 14 treesize of output 12 [2024-11-11 15:57:07,411 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 14 treesize of output 12 [2024-11-11 15:57:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:07,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789108057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:07,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:07,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-11 15:57:07,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273513248] [2024-11-11 15:57:07,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:07,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 15:57:07,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:07,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 15:57:07,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-11 15:57:07,424 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 15:57:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:07,516 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2024-11-11 15:57:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:57:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 21 [2024-11-11 15:57:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:07,518 INFO L225 Difference]: With dead ends: 78 [2024-11-11 15:57:07,518 INFO L226 Difference]: Without dead ends: 57 [2024-11-11 15:57:07,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:57:07,519 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:07,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 64 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-11 15:57:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-11 15:57:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-11-11 15:57:07,527 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2024-11-11 15:57:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:07,528 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-11-11 15:57:07,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 15:57:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-11-11 15:57:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-11 15:57:07,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:07,529 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:07,546 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 15:57:07,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:07,729 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:07,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2024-11-11 15:57:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131605829] [2024-11-11 15:57:07,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:07,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:07,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:07,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131605829] [2024-11-11 15:57:07,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131605829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:07,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286780600] [2024-11-11 15:57:07,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:57:07,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:07,828 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 15:57:07,830 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 15:57:07,900 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:57:07,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:07,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:57:07,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:07,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286780600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:08,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:08,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:57:08,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747408231] [2024-11-11 15:57:08,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:08,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:57:08,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:08,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:57:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:57:08,025 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 15:57:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:08,212 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-11 15:57:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 15:57:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-11 15:57:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:08,215 INFO L225 Difference]: With dead ends: 85 [2024-11-11 15:57:08,215 INFO L226 Difference]: Without dead ends: 75 [2024-11-11 15:57:08,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-11 15:57:08,216 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:08,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 28 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-11 15:57:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2024-11-11 15:57:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 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 15:57:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-11 15:57:08,234 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2024-11-11 15:57:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:08,234 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-11 15:57:08,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 15:57:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-11 15:57:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 15:57:08,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:08,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:08,254 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 15:57:08,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:08,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:08,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:08,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2024-11-11 15:57:08,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:08,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14094708] [2024-11-11 15:57:08,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:08,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:08,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14094708] [2024-11-11 15:57:08,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14094708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383319781] [2024-11-11 15:57:08,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:57:08,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:08,549 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 15:57:08,551 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 15:57:08,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:57:08,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:08,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:57:08,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:08,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:57:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383319781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:08,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:57:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668633737] [2024-11-11 15:57:08,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:08,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:57:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:57:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:57:08,728 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:08,851 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2024-11-11 15:57:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 15:57:08,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-11 15:57:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:08,855 INFO L225 Difference]: With dead ends: 78 [2024-11-11 15:57:08,855 INFO L226 Difference]: Without dead ends: 42 [2024-11-11 15:57:08,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 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 15:57:08,856 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:08,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 37 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-11 15:57:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-11-11 15:57:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 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 15:57:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-11 15:57:08,868 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2024-11-11 15:57:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:08,869 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-11 15:57:08,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-11 15:57:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:57:08,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:08,870 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:08,887 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 15:57:09,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:09,071 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:09,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2024-11-11 15:57:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606642211] [2024-11-11 15:57:09,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:09,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:09,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606642211] [2024-11-11 15:57:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606642211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527397657] [2024-11-11 15:57:09,621 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:57:09,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:09,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:09,623 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 15:57:09,624 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 15:57:09,702 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:57:09,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:09,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-11 15:57:09,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:09,714 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 15:57:09,930 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 15:57:10,039 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 15:57:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:10,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527397657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:10,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-11 15:57:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946058138] [2024-11-11 15:57:10,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:10,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-11 15:57:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-11 15:57:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2024-11-11 15:57:10,645 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 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 15:57:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:11,536 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-11 15:57:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-11 15:57:11,536 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 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) Word has length 29 [2024-11-11 15:57:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:11,537 INFO L225 Difference]: With dead ends: 88 [2024-11-11 15:57:11,537 INFO L226 Difference]: Without dead ends: 79 [2024-11-11 15:57:11,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=391, Invalid=2365, Unknown=0, NotChecked=0, Total=2756 [2024-11-11 15:57:11,539 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 61 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:11,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 79 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:57:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-11 15:57:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2024-11-11 15:57:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2024-11-11 15:57:11,551 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 29 [2024-11-11 15:57:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:11,552 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2024-11-11 15:57:11,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 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 15:57:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2024-11-11 15:57:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:57:11,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:11,553 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:11,572 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 15:57:11,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:11,753 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:11,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2024-11-11 15:57:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:11,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739658023] [2024-11-11 15:57:11,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:57:12,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739658023] [2024-11-11 15:57:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739658023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248300412] [2024-11-11 15:57:12,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:12,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:12,027 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 15:57:12,028 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 15:57:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:12,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 15:57:12,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:12,148 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 15:57:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:57:12,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:12,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-11 15:57:12,258 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-11 15:57:12,258 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 26 treesize of output 16 [2024-11-11 15:57:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:57:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248300412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:12,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:12,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-11 15:57:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374536191] [2024-11-11 15:57:12,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:12,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-11 15:57:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-11 15:57:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-11 15:57:12,283 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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 15:57:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:12,528 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2024-11-11 15:57:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:57:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) Word has length 29 [2024-11-11 15:57:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:12,529 INFO L225 Difference]: With dead ends: 106 [2024-11-11 15:57:12,530 INFO L226 Difference]: Without dead ends: 99 [2024-11-11 15:57:12,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:57:12,531 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 63 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:12,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 123 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:57:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-11 15:57:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 71. [2024-11-11 15:57:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 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 15:57:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-11-11 15:57:12,556 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 29 [2024-11-11 15:57:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:12,556 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-11-11 15:57:12,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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 15:57:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-11-11 15:57:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:57:12,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:12,557 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:12,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-11 15:57:12,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:12,758 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:12,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times [2024-11-11 15:57:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:12,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402148464] [2024-11-11 15:57:12,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402148464] [2024-11-11 15:57:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402148464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509724892] [2024-11-11 15:57:13,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:13,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:13,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:13,046 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 15:57:13,048 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 15:57:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:13,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 15:57:13,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:13,136 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 15:57:13,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:13,161 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 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-11 15:57:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:13,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:13,221 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 16 treesize of output 14 [2024-11-11 15:57:13,223 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 16 treesize of output 12 [2024-11-11 15:57:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509724892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:13,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:13,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-11 15:57:13,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960752069] [2024-11-11 15:57:13,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:13,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:57:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:57:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:57:13,244 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:13,406 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2024-11-11 15:57:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:57:13,407 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-11 15:57:13,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:13,409 INFO L225 Difference]: With dead ends: 113 [2024-11-11 15:57:13,409 INFO L226 Difference]: Without dead ends: 82 [2024-11-11 15:57:13,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:57:13,410 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:13,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 86 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-11 15:57:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2024-11-11 15:57:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 72 states have internal predecessors, (89), 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 15:57:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2024-11-11 15:57:13,438 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 29 [2024-11-11 15:57:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:13,439 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2024-11-11 15:57:13,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2024-11-11 15:57:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-11 15:57:13,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:13,441 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:13,458 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 15:57:13,641 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,SelfDestructingSolverStorable9 [2024-11-11 15:57:13,642 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:13,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:13,642 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2024-11-11 15:57:13,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944507683] [2024-11-11 15:57:13,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:13,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:13,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944507683] [2024-11-11 15:57:13,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944507683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954736119] [2024-11-11 15:57:13,751 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:57:13,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:13,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:13,753 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 15:57:13,754 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 15:57:13,842 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-11 15:57:13,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:13,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:57:13,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:13,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954736119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:13,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:57:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855547829] [2024-11-11 15:57:13,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:13,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:57:13,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:57:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:57:13,985 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 15:57:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:14,197 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2024-11-11 15:57:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:57:14,197 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-11 15:57:14,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:14,198 INFO L225 Difference]: With dead ends: 116 [2024-11-11 15:57:14,198 INFO L226 Difference]: Without dead ends: 101 [2024-11-11 15:57:14,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:57:14,199 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 74 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:14,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 22 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:57:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-11 15:57:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2024-11-11 15:57:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2024-11-11 15:57:14,210 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 31 [2024-11-11 15:57:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:14,210 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2024-11-11 15:57:14,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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 15:57:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2024-11-11 15:57:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-11 15:57:14,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:14,211 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:14,230 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 15:57:14,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:14,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:14,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2024-11-11 15:57:14,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:14,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661654445] [2024-11-11 15:57:14,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:14,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661654445] [2024-11-11 15:57:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661654445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448657271] [2024-11-11 15:57:14,513 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:57:14,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:14,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:14,515 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 15:57:14,516 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 15:57:14,598 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-11 15:57:14,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:14,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:57:14,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:14,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:57:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448657271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:14,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:14,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:57:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066803301] [2024-11-11 15:57:14,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:14,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:57:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:57:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:57:14,749 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:14,880 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2024-11-11 15:57:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 15:57:14,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-11 15:57:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:14,881 INFO L225 Difference]: With dead ends: 106 [2024-11-11 15:57:14,881 INFO L226 Difference]: Without dead ends: 53 [2024-11-11 15:57:14,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 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 15:57:14,882 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:14,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-11 15:57:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-11-11 15:57:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 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 15:57:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-11 15:57:14,890 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 32 [2024-11-11 15:57:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:14,890 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-11 15:57:14,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-11 15:57:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-11 15:57:14,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:14,891 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:14,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:15,094 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,SelfDestructingSolverStorable11 [2024-11-11 15:57:15,095 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:15,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2024-11-11 15:57:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063751172] [2024-11-11 15:57:15,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:15,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063751172] [2024-11-11 15:57:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063751172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541639787] [2024-11-11 15:57:15,660 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:57:15,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:15,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:15,662 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 15:57:15,664 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 15:57:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:15,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-11 15:57:15,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:15,751 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 15:57:15,901 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 15:57:15,986 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 19 treesize of output 11 [2024-11-11 15:57:16,091 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 15:57:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:16,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:16,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541639787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:16,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:16,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 36 [2024-11-11 15:57:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483413840] [2024-11-11 15:57:16,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:16,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-11 15:57:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-11 15:57:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 15:57:16,583 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:18,071 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2024-11-11 15:57:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-11 15:57:18,072 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-11 15:57:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:18,073 INFO L225 Difference]: With dead ends: 122 [2024-11-11 15:57:18,073 INFO L226 Difference]: Without dead ends: 113 [2024-11-11 15:57:18,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=505, Invalid=4051, Unknown=0, NotChecked=0, Total=4556 [2024-11-11 15:57:18,075 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:18,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 95 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 15:57:18,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-11 15:57:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2024-11-11 15:57:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 96 states have internal predecessors, (121), 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 15:57:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-11-11 15:57:18,097 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 37 [2024-11-11 15:57:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:18,097 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-11-11 15:57:18,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-11-11 15:57:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-11 15:57:18,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:18,098 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:18,111 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 15:57:18,299 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,SelfDestructingSolverStorable12 [2024-11-11 15:57:18,300 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:18,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2024-11-11 15:57:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800823627] [2024-11-11 15:57:18,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:18,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800823627] [2024-11-11 15:57:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800823627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393899026] [2024-11-11 15:57:18,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:57:18,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:18,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:18,749 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 15:57:18,750 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 15:57:18,824 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:57:18,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:18,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-11 15:57:18,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:18,944 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 13 [2024-11-11 15:57:19,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:19,045 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 21 treesize of output 15 [2024-11-11 15:57:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:19,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:19,400 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 31 treesize of output 27 [2024-11-11 15:57:19,404 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-11 15:57:19,405 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 28 treesize of output 16 [2024-11-11 15:57:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393899026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:19,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:19,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2024-11-11 15:57:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281604820] [2024-11-11 15:57:19,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:19,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-11 15:57:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-11 15:57:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2024-11-11 15:57:19,554 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 43 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 43 states have internal predecessors, (89), 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 15:57:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:20,866 INFO L93 Difference]: Finished difference Result 254 states and 327 transitions. [2024-11-11 15:57:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-11 15:57:20,867 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 43 states have internal predecessors, (89), 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 37 [2024-11-11 15:57:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:20,868 INFO L225 Difference]: With dead ends: 254 [2024-11-11 15:57:20,868 INFO L226 Difference]: Without dead ends: 245 [2024-11-11 15:57:20,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=886, Invalid=4370, Unknown=0, NotChecked=0, Total=5256 [2024-11-11 15:57:20,870 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 307 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:20,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 137 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:57:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-11 15:57:20,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 171. [2024-11-11 15:57:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 170 states have internal predecessors, (220), 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 15:57:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2024-11-11 15:57:20,900 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 37 [2024-11-11 15:57:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:20,901 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2024-11-11 15:57:20,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 43 states have internal predecessors, (89), 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 15:57:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2024-11-11 15:57:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-11 15:57:20,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:20,902 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:20,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-11 15:57:21,102 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,SelfDestructingSolverStorable13 [2024-11-11 15:57:21,102 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:21,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 2 times [2024-11-11 15:57:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:21,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418380957] [2024-11-11 15:57:21,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:21,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:21,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418380957] [2024-11-11 15:57:21,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418380957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:21,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103938068] [2024-11-11 15:57:21,411 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:57:21,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:21,413 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 15:57:21,414 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 15:57:21,507 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:57:21,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:21,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 15:57:21,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:21,529 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 15:57:21,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:21,554 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 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-11 15:57:21,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:21,578 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 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-11 15:57:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:21,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:21,665 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 16 treesize of output 14 [2024-11-11 15:57:21,668 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 16 treesize of output 12 [2024-11-11 15:57:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103938068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:21,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2024-11-11 15:57:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228862716] [2024-11-11 15:57:21,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:21,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-11 15:57:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-11 15:57:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-11 15:57:21,708 INFO L87 Difference]: Start difference. First operand 171 states and 220 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 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 15:57:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:22,000 INFO L93 Difference]: Finished difference Result 286 states and 376 transitions. [2024-11-11 15:57:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-11 15:57:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 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) Word has length 37 [2024-11-11 15:57:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:22,002 INFO L225 Difference]: With dead ends: 286 [2024-11-11 15:57:22,002 INFO L226 Difference]: Without dead ends: 183 [2024-11-11 15:57:22,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2024-11-11 15:57:22,003 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:22,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 98 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:57:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-11 15:57:22,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2024-11-11 15:57:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2823529411764707) internal successors, (218), 170 states have internal predecessors, (218), 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 15:57:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 218 transitions. [2024-11-11 15:57:22,045 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 218 transitions. Word has length 37 [2024-11-11 15:57:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:22,045 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 218 transitions. [2024-11-11 15:57:22,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 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 15:57:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 218 transitions. [2024-11-11 15:57:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-11 15:57:22,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:22,046 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:22,063 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 15:57:22,247 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,SelfDestructingSolverStorable14 [2024-11-11 15:57:22,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:22,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:22,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2024-11-11 15:57:22,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:22,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498886640] [2024-11-11 15:57:22,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:22,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:22,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498886640] [2024-11-11 15:57:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498886640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:22,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986719309] [2024-11-11 15:57:22,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:57:22,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:22,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:22,378 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 15:57:22,381 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 15:57:22,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:57:22,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:22,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 15:57:22,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:22,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986719309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:22,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:22,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-11 15:57:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149786467] [2024-11-11 15:57:22,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:22,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-11 15:57:22,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:22,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-11 15:57:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:57:22,661 INFO L87 Difference]: Start difference. First operand 171 states and 218 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 15:57:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:22,979 INFO L93 Difference]: Finished difference Result 202 states and 258 transitions. [2024-11-11 15:57:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-11 15:57:22,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-11 15:57:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:22,981 INFO L225 Difference]: With dead ends: 202 [2024-11-11 15:57:22,981 INFO L226 Difference]: Without dead ends: 184 [2024-11-11 15:57:22,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-11 15:57:22,982 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 87 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:22,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 45 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:57:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-11 15:57:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 104. [2024-11-11 15:57:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.233009708737864) internal successors, (127), 103 states have internal predecessors, (127), 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 15:57:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2024-11-11 15:57:23,001 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 39 [2024-11-11 15:57:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:23,001 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2024-11-11 15:57:23,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 15:57:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2024-11-11 15:57:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-11 15:57:23,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:23,002 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:23,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:23,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:23,202 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:23,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2024-11-11 15:57:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:23,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583933206] [2024-11-11 15:57:23,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:23,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:23,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583933206] [2024-11-11 15:57:23,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583933206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:23,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620130558] [2024-11-11 15:57:23,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:57:23,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:23,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:23,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-11 15:57:23,444 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-11 15:57:23,445 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:23,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 15:57:23,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:23,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:57:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620130558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:23,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-11 15:57:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442805554] [2024-11-11 15:57:23,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:23,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-11 15:57:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-11 15:57:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:57:23,619 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 15:57:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:23,789 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2024-11-11 15:57:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 15:57:23,789 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 40 [2024-11-11 15:57:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:23,790 INFO L225 Difference]: With dead ends: 133 [2024-11-11 15:57:23,790 INFO L226 Difference]: Without dead ends: 61 [2024-11-11 15:57:23,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:57:23,791 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:23,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 46 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-11 15:57:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2024-11-11 15:57:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 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 15:57:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-11 15:57:23,803 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 40 [2024-11-11 15:57:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:23,803 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-11 15:57:23,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 15:57:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-11 15:57:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-11 15:57:23,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:23,804 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:23,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:24,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-11 15:57:24,005 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:24,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:24,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2024-11-11 15:57:24,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:24,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21070236] [2024-11-11 15:57:24,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:24,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:24,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21070236] [2024-11-11 15:57:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21070236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:24,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780879448] [2024-11-11 15:57:24,742 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:57:24,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:24,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:24,743 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:24,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-11 15:57:24,848 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:57:24,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:24,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-11 15:57:24,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:24,857 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 15:57:25,004 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 15:57:25,097 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 15:57:25,217 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 15:57:25,325 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 15:57:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:25,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780879448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:25,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 45 [2024-11-11 15:57:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318860522] [2024-11-11 15:57:25,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:25,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-11 15:57:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-11 15:57:25,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1824, Unknown=0, NotChecked=0, Total=1980 [2024-11-11 15:57:25,938 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 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 15:57:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:28,132 INFO L93 Difference]: Finished difference Result 154 states and 192 transitions. [2024-11-11 15:57:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-11 15:57:28,132 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 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 45 [2024-11-11 15:57:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:28,133 INFO L225 Difference]: With dead ends: 154 [2024-11-11 15:57:28,133 INFO L226 Difference]: Without dead ends: 145 [2024-11-11 15:57:28,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=733, Invalid=7639, Unknown=0, NotChecked=0, Total=8372 [2024-11-11 15:57:28,136 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:28,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 90 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 15:57:28,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-11 15:57:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2024-11-11 15:57:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 119 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2024-11-11 15:57:28,183 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 45 [2024-11-11 15:57:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:28,183 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2024-11-11 15:57:28,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 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 15:57:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2024-11-11 15:57:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-11 15:57:28,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:28,184 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:28,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-11 15:57:28,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-11 15:57:28,385 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:28,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2054602352, now seen corresponding path program 3 times [2024-11-11 15:57:28,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:28,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113159980] [2024-11-11 15:57:28,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:28,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113159980] [2024-11-11 15:57:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113159980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471105754] [2024-11-11 15:57:28,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:57:28,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:28,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:28,858 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:28,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-11 15:57:28,953 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:57:28,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:28,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 15:57:28,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:28,974 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 27 treesize of output 15 [2024-11-11 15:57:33,396 INFO L349 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2024-11-11 15:57:33,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 35 treesize of output 28 [2024-11-11 15:57:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:57:33,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:57:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471105754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:33,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:33,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 35 [2024-11-11 15:57:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190103428] [2024-11-11 15:57:33,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:33,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-11 15:57:33,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:33,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-11 15:57:33,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1017, Unknown=2, NotChecked=0, Total=1190 [2024-11-11 15:57:33,802 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 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 15:57:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:35,900 INFO L93 Difference]: Finished difference Result 240 states and 309 transitions. [2024-11-11 15:57:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-11 15:57:35,901 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 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 45 [2024-11-11 15:57:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:35,902 INFO L225 Difference]: With dead ends: 240 [2024-11-11 15:57:35,902 INFO L226 Difference]: Without dead ends: 233 [2024-11-11 15:57:35,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1386, Invalid=6622, Unknown=2, NotChecked=0, Total=8010 [2024-11-11 15:57:35,905 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 235 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:35,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 80 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 15:57:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-11 15:57:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 185. [2024-11-11 15:57:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.2934782608695652) internal successors, (238), 184 states have internal predecessors, (238), 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 15:57:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 238 transitions. [2024-11-11 15:57:35,957 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 238 transitions. Word has length 45 [2024-11-11 15:57:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:35,957 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 238 transitions. [2024-11-11 15:57:35,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 35 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 15:57:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 238 transitions. [2024-11-11 15:57:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-11 15:57:35,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:35,958 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:35,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-11 15:57:36,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:36,159 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:36,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1431802284, now seen corresponding path program 4 times [2024-11-11 15:57:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753409947] [2024-11-11 15:57:36,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:57:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753409947] [2024-11-11 15:57:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753409947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854314942] [2024-11-11 15:57:36,694 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:57:36,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:36,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:36,695 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:36,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-11 15:57:36,783 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:57:36,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:36,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-11 15:57:36,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:36,836 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 13 [2024-11-11 15:57:36,878 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-11 15:57:36,878 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 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-11 15:57:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 15:57:36,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:37,133 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 53 treesize of output 47 [2024-11-11 15:57:37,145 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-11 15:57:37,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 72 treesize of output 58 [2024-11-11 15:57:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 15:57:37,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854314942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:37,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:37,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 13] total 36 [2024-11-11 15:57:37,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68737108] [2024-11-11 15:57:37,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:37,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-11 15:57:37,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-11 15:57:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 15:57:37,164 INFO L87 Difference]: Start difference. First operand 185 states and 238 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 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 15:57:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:37,727 INFO L93 Difference]: Finished difference Result 211 states and 270 transitions. [2024-11-11 15:57:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-11 15:57:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 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 45 [2024-11-11 15:57:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:37,728 INFO L225 Difference]: With dead ends: 211 [2024-11-11 15:57:37,728 INFO L226 Difference]: Without dead ends: 162 [2024-11-11 15:57:37,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=359, Invalid=2293, Unknown=0, NotChecked=0, Total=2652 [2024-11-11 15:57:37,729 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 121 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:37,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 85 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:57:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-11 15:57:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 151. [2024-11-11 15:57:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.2) internal successors, (180), 150 states have internal predecessors, (180), 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 15:57:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2024-11-11 15:57:37,761 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 45 [2024-11-11 15:57:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:37,761 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2024-11-11 15:57:37,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 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 15:57:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2024-11-11 15:57:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-11 15:57:37,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:37,762 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:37,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:37,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:37,963 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:37,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1422716494, now seen corresponding path program 3 times [2024-11-11 15:57:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:37,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012135364] [2024-11-11 15:57:37,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:37,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:38,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012135364] [2024-11-11 15:57:38,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012135364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:38,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855994818] [2024-11-11 15:57:38,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:57:38,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:38,379 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:38,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-11 15:57:38,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-11 15:57:38,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:38,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-11 15:57:38,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:38,533 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 15:57:38,622 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-11 15:57:38,622 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 2 case distinctions, treesize of input 38 treesize of output 45 [2024-11-11 15:57:38,755 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-11 15:57:38,755 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 2 case distinctions, treesize of input 76 treesize of output 74 [2024-11-11 15:57:38,869 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-11 15:57:38,870 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 2 case distinctions, treesize of input 71 treesize of output 60 [2024-11-11 15:57:39,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:39,124 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 58 treesize of output 33 [2024-11-11 15:57:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:57:39,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:57:58,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855994818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:58,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:58,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 20] total 47 [2024-11-11 15:57:58,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646891035] [2024-11-11 15:57:58,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:58,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-11 15:57:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-11 15:57:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=1782, Unknown=4, NotChecked=0, Total=2162 [2024-11-11 15:57:58,633 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 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 15:58:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:01,652 INFO L93 Difference]: Finished difference Result 261 states and 318 transitions. [2024-11-11 15:58:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-11 15:58:01,653 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 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 45 [2024-11-11 15:58:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:01,653 INFO L225 Difference]: With dead ends: 261 [2024-11-11 15:58:01,653 INFO L226 Difference]: Without dead ends: 124 [2024-11-11 15:58:01,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=1268, Invalid=6559, Unknown=5, NotChecked=0, Total=7832 [2024-11-11 15:58:01,656 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:01,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 102 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 15:58:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-11 15:58:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2024-11-11 15:58:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1623931623931625) internal successors, (136), 117 states have internal predecessors, (136), 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 15:58:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2024-11-11 15:58:01,678 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 45 [2024-11-11 15:58:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:01,679 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2024-11-11 15:58:01,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 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 15:58:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2024-11-11 15:58:01,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-11 15:58:01,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:01,679 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:01,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:01,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:01,880 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:01,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1510143892, now seen corresponding path program 11 times [2024-11-11 15:58:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265181083] [2024-11-11 15:58:01,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:58:02,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265181083] [2024-11-11 15:58:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265181083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971806891] [2024-11-11 15:58:02,058 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:58:02,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:02,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:02,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:02,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-11 15:58:02,216 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-11 15:58:02,216 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:02,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:58:02,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:58:02,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:58:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971806891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:02,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:02,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-11 15:58:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947241434] [2024-11-11 15:58:02,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:02,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 15:58:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 15:58:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:58:02,477 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 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 15:58:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:02,862 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2024-11-11 15:58:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 15:58:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 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) Word has length 47 [2024-11-11 15:58:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:02,863 INFO L225 Difference]: With dead ends: 173 [2024-11-11 15:58:02,863 INFO L226 Difference]: Without dead ends: 150 [2024-11-11 15:58:02,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-11 15:58:02,864 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 75 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:02,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 40 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:58:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-11 15:58:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 103. [2024-11-11 15:58:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 102 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 15:58:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2024-11-11 15:58:02,893 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 47 [2024-11-11 15:58:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:02,893 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2024-11-11 15:58:02,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 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 15:58:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2024-11-11 15:58:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-11 15:58:02,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:02,893 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:02,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-11 15:58:03,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-11 15:58:03,094 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:03,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash -220752601, now seen corresponding path program 12 times [2024-11-11 15:58:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251214740] [2024-11-11 15:58:03,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:58:03,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251214740] [2024-11-11 15:58:03,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251214740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018565449] [2024-11-11 15:58:03,259 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:58:03,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:03,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:03,261 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:03,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-11 15:58:03,472 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-11 15:58:03,472 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:03,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:58:03,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:58:03,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:58:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018565449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:03,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:03,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-11 15:58:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141662237] [2024-11-11 15:58:03,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:03,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 15:58:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 15:58:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:58:03,767 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:03,969 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2024-11-11 15:58:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:58:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-11 15:58:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:03,970 INFO L225 Difference]: With dead ends: 158 [2024-11-11 15:58:03,970 INFO L226 Difference]: Without dead ends: 80 [2024-11-11 15:58:03,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-11 15:58:03,971 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 63 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:03,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 40 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:58:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-11 15:58:03,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-11 15:58:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 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 15:58:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2024-11-11 15:58:03,987 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 48 [2024-11-11 15:58:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:03,987 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2024-11-11 15:58:03,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2024-11-11 15:58:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-11 15:58:03,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:03,988 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:04,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-11 15:58:04,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-11 15:58:04,191 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:04,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 663114381, now seen corresponding path program 13 times [2024-11-11 15:58:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977864607] [2024-11-11 15:58:04,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:05,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:05,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977864607] [2024-11-11 15:58:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977864607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:05,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234392464] [2024-11-11 15:58:05,267 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:58:05,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:05,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:05,268 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:05,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-11 15:58:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:05,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-11 15:58:05,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:05,386 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 15:58:05,576 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 15:58:05,673 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 15:58:05,784 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 15:58:05,922 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 15:58:06,078 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 15:58:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:06,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:07,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234392464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:07,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 54 [2024-11-11 15:58:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659288151] [2024-11-11 15:58:07,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:07,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-11 15:58:07,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:07,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-11 15:58:07,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2674, Unknown=0, NotChecked=0, Total=2862 [2024-11-11 15:58:07,151 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 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 15:58:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:10,907 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2024-11-11 15:58:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-11 15:58:10,907 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-11 15:58:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:10,908 INFO L225 Difference]: With dead ends: 173 [2024-11-11 15:58:10,908 INFO L226 Difference]: Without dead ends: 162 [2024-11-11 15:58:10,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=760, Invalid=9746, Unknown=0, NotChecked=0, Total=10506 [2024-11-11 15:58:10,910 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:10,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 156 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-11 15:58:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-11 15:58:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2024-11-11 15:58:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.1627906976744187) internal successors, (150), 129 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 150 transitions. [2024-11-11 15:58:10,950 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 150 transitions. Word has length 53 [2024-11-11 15:58:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:10,951 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 150 transitions. [2024-11-11 15:58:10,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 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 15:58:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 150 transitions. [2024-11-11 15:58:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-11 15:58:10,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:10,951 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:10,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:11,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:11,152 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:11,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash 783767503, now seen corresponding path program 14 times [2024-11-11 15:58:11,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785838315] [2024-11-11 15:58:11,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:11,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:11,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785838315] [2024-11-11 15:58:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785838315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:11,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051131610] [2024-11-11 15:58:11,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:58:11,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:11,382 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:11,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-11 15:58:11,515 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:58:11,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:11,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-11 15:58:11,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:11,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051131610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:11,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-11 15:58:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581568352] [2024-11-11 15:58:11,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:11,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-11 15:58:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-11 15:58:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-11 15:58:11,847 INFO L87 Difference]: Start difference. First operand 130 states and 150 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:12,446 INFO L93 Difference]: Finished difference Result 199 states and 231 transitions. [2024-11-11 15:58:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-11 15:58:12,446 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-11 15:58:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:12,447 INFO L225 Difference]: With dead ends: 199 [2024-11-11 15:58:12,447 INFO L226 Difference]: Without dead ends: 176 [2024-11-11 15:58:12,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-11 15:58:12,448 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:12,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 50 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 15:58:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-11 15:58:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 116. [2024-11-11 15:58:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.173913043478261) internal successors, (135), 115 states have internal predecessors, (135), 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 15:58:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2024-11-11 15:58:12,475 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 55 [2024-11-11 15:58:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:12,475 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2024-11-11 15:58:12,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2024-11-11 15:58:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-11 15:58:12,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:12,476 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:12,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:12,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:12,681 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:12,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -469998324, now seen corresponding path program 15 times [2024-11-11 15:58:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898820362] [2024-11-11 15:58:12,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:58:12,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:12,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898820362] [2024-11-11 15:58:12,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898820362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:12,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455261620] [2024-11-11 15:58:12,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:58:12,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:12,906 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:12,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-11 15:58:13,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-11 15:58:13,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:13,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-11 15:58:13,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 15:58:13,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 15:58:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455261620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:13,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-11 15:58:13,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957999774] [2024-11-11 15:58:13,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:13,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-11 15:58:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:13,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-11 15:58:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-11 15:58:13,486 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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 15:58:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:13,768 INFO L93 Difference]: Finished difference Result 184 states and 213 transitions. [2024-11-11 15:58:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-11 15:58:13,768 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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 56 [2024-11-11 15:58:13,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:13,769 INFO L225 Difference]: With dead ends: 184 [2024-11-11 15:58:13,769 INFO L226 Difference]: Without dead ends: 92 [2024-11-11 15:58:13,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-11 15:58:13,770 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:13,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 46 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:58:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-11 15:58:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2024-11-11 15:58:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 78 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2024-11-11 15:58:13,792 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 56 [2024-11-11 15:58:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:13,792 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2024-11-11 15:58:13,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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 15:58:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2024-11-11 15:58:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-11 15:58:13,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:13,793 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:13,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:13,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-11 15:58:13,998 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:13,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:13,998 INFO L85 PathProgramCache]: Analyzing trace with hash -844503370, now seen corresponding path program 16 times [2024-11-11 15:58:13,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:13,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334833575] [2024-11-11 15:58:13,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:13,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-11 15:58:15,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334833575] [2024-11-11 15:58:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334833575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031847895] [2024-11-11 15:58:15,273 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:58:15,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:15,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:15,275 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:15,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-11 15:58:15,446 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:58:15,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:15,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-11 15:58:15,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:15,454 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 15:58:15,666 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 15:58:15,809 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 15:58:15,936 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 15:58:16,079 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 15:58:16,234 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 15:58:16,476 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 15:58:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-11 15:58:16,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-11 15:58:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031847895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:17,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 24] total 63 [2024-11-11 15:58:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627560713] [2024-11-11 15:58:17,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:17,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-11 15:58:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-11 15:58:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3686, Unknown=0, NotChecked=0, Total=3906 [2024-11-11 15:58:17,955 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 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 15:58:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:22,940 INFO L93 Difference]: Finished difference Result 200 states and 236 transitions. [2024-11-11 15:58:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-11 15:58:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 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 61 [2024-11-11 15:58:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:22,941 INFO L225 Difference]: With dead ends: 200 [2024-11-11 15:58:22,941 INFO L226 Difference]: Without dead ends: 189 [2024-11-11 15:58:22,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3671 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=923, Invalid=13839, Unknown=0, NotChecked=0, Total=14762 [2024-11-11 15:58:22,943 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 100 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 3565 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 3565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:22,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 153 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 3565 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-11 15:58:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-11 15:58:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 150. [2024-11-11 15:58:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.174496644295302) internal successors, (175), 149 states have internal predecessors, (175), 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 15:58:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2024-11-11 15:58:22,999 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 61 [2024-11-11 15:58:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:23,000 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2024-11-11 15:58:23,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 63 states have internal predecessors, (106), 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 15:58:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2024-11-11 15:58:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-11 15:58:23,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:23,001 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:23,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:23,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-11 15:58:23,201 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:23,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -164445000, now seen corresponding path program 5 times [2024-11-11 15:58:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764159176] [2024-11-11 15:58:23,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 113 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:58:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764159176] [2024-11-11 15:58:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764159176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578665013] [2024-11-11 15:58:24,040 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:58:24,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:24,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:24,041 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:24,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-11 15:58:24,494 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-11 15:58:24,495 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:24,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-11 15:58:24,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:24,551 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 23 treesize of output 13 [2024-11-11 15:58:24,621 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-11 15:58:24,622 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 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-11 15:58:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-11 15:58:24,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:24,953 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 53 treesize of output 47 [2024-11-11 15:58:24,969 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-11 15:58:24,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 72 treesize of output 58 [2024-11-11 15:58:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-11 15:58:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578665013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:24,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:24,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 17] total 36 [2024-11-11 15:58:24,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96481376] [2024-11-11 15:58:24,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:24,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-11 15:58:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-11 15:58:24,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 15:58:24,994 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:26,374 INFO L93 Difference]: Finished difference Result 238 states and 283 transitions. [2024-11-11 15:58:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-11 15:58:26,374 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-11 15:58:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:26,375 INFO L225 Difference]: With dead ends: 238 [2024-11-11 15:58:26,375 INFO L226 Difference]: Without dead ends: 229 [2024-11-11 15:58:26,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=391, Invalid=2689, Unknown=0, NotChecked=0, Total=3080 [2024-11-11 15:58:26,376 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 236 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:26,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 128 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 15:58:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-11 15:58:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 202. [2024-11-11 15:58:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.1890547263681592) internal successors, (239), 201 states have internal predecessors, (239), 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 15:58:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2024-11-11 15:58:26,442 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 61 [2024-11-11 15:58:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:26,442 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2024-11-11 15:58:26,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2024-11-11 15:58:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-11 15:58:26,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:26,443 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:26,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:26,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-11 15:58:26,643 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:26,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1221758394, now seen corresponding path program 4 times [2024-11-11 15:58:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:26,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021052353] [2024-11-11 15:58:26,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:26,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat