./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.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 c10f08fb4b6a5b6f03e91e10a510f262e1b7fa98e124f4a160c252b3d63b04c2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 17:03:51,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 17:03:51,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 17:03:51,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 17:03:51,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 17:03:51,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 17:03:51,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 17:03:51,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 17:03:51,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 17:03:51,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 17:03:51,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 17:03:51,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 17:03:51,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 17:03:51,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 17:03:51,585 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 17:03:51,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 17:03:51,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 17:03:51,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 17:03:51,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 17:03:51,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 17:03:51,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 17:03:51,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 17:03:51,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 17:03:51,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 17:03:51,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 17:03:51,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 17:03:51,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 17:03:51,594 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 17:03:51,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 17:03:51,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 17:03:51,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 17:03:51,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 17:03:51,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:03:51,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 17:03:51,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 17:03:51,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 17:03:51,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 17:03:51,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 17:03:51,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 17:03:51,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 17:03:51,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 17:03:51,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 17:03:51,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c10f08fb4b6a5b6f03e91e10a510f262e1b7fa98e124f4a160c252b3d63b04c2 [2024-11-19 17:03:51,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 17:03:51,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 17:03:51,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 17:03:51,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 17:03:51,883 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 17:03:51,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c [2024-11-19 17:03:53,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 17:03:53,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 17:03:53,564 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c [2024-11-19 17:03:53,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9ed16f3/684091c56420468bb72e20478b4c0030/FLAGcb0e5fb7f [2024-11-19 17:03:53,590 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9ed16f3/684091c56420468bb72e20478b4c0030 [2024-11-19 17:03:53,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 17:03:53,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 17:03:53,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 17:03:53,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 17:03:53,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 17:03:53,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c227fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53, skipping insertion in model container [2024-11-19 17:03:53,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 17:03:53,819 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/brs3.c[587,600] [2024-11-19 17:03:53,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:03:53,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 17:03:53,872 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/brs3.c[587,600] [2024-11-19 17:03:53,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:03:53,897 INFO L204 MainTranslator]: Completed translation [2024-11-19 17:03:53,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53 WrapperNode [2024-11-19 17:03:53,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 17:03:53,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 17:03:53,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 17:03:53,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 17:03:53,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,930 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-11-19 17:03:53,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 17:03:53,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 17:03:53,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 17:03:53,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 17:03:53,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,969 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-11-19 17:03:53,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 17:03:53,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 17:03:53,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 17:03:53,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 17:03:53,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (1/1) ... [2024-11-19 17:03:53,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:03:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:03:54,024 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) [2024-11-19 17:03:54,031 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 [2024-11-19 17:03:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 17:03:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 17:03:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 17:03:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 17:03:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 17:03:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 17:03:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 17:03:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 17:03:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 17:03:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 17:03:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 17:03:54,180 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 17:03:54,183 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 17:03:54,367 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-19 17:03:54,367 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 17:03:54,381 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 17:03:54,382 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 17:03:54,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:54 BoogieIcfgContainer [2024-11-19 17:03:54,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 17:03:54,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 17:03:54,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 17:03:54,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 17:03:54,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:03:53" (1/3) ... [2024-11-19 17:03:54,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6685d468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:54, skipping insertion in model container [2024-11-19 17:03:54,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:53" (2/3) ... [2024-11-19 17:03:54,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6685d468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:54, skipping insertion in model container [2024-11-19 17:03:54,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:54" (3/3) ... [2024-11-19 17:03:54,394 INFO L112 eAbstractionObserver]: Analyzing ICFG brs3.c [2024-11-19 17:03:54,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 17:03:54,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 17:03:54,480 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 17:03:54,486 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;@268e0f99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 17:03:54,486 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 17:03:54,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 17:03:54,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:54,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:54,495 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:54,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2024-11-19 17:03:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912780982] [2024-11-19 17:03:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:54,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912780982] [2024-11-19 17:03:54,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912780982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:03:54,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:03:54,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:03:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576254045] [2024-11-19 17:03:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:03:54,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 17:03:54,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:03:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 17:03:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 17:03:54,748 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:03:54,758 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2024-11-19 17:03:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 17:03:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 17:03:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:03:54,766 INFO L225 Difference]: With dead ends: 36 [2024-11-19 17:03:54,766 INFO L226 Difference]: Without dead ends: 16 [2024-11-19 17:03:54,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 17:03:54,775 INFO L432 NwaCegarLoop]: 24 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, 24 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 [2024-11-19 17:03:54,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:03:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-19 17:03:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-19 17:03:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-19 17:03:54,804 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-11-19 17:03:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:03:54,804 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-19 17:03:54,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-19 17:03:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 17:03:54,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:54,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:54,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 17:03:54,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:54,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2024-11-19 17:03:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:54,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411688278] [2024-11-19 17:03:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:54,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411688278] [2024-11-19 17:03:55,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411688278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:03:55,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:03:55,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 17:03:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506827820] [2024-11-19 17:03:55,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:03:55,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 17:03:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:03:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 17:03:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 17:03:55,054 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:03:55,136 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-19 17:03:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 17:03:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 17:03:55,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:03:55,138 INFO L225 Difference]: With dead ends: 33 [2024-11-19 17:03:55,138 INFO L226 Difference]: Without dead ends: 22 [2024-11-19 17:03:55,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 17:03:55,141 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:03:55,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:03:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-19 17:03:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-19 17:03:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2024-11-19 17:03:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-19 17:03:55,149 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2024-11-19 17:03:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:03:55,149 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-19 17:03:55,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-19 17:03:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 17:03:55,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:55,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:55,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 17:03:55,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:55,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2024-11-19 17:03:55,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011950431] [2024-11-19 17:03:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:03:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011950431] [2024-11-19 17:03:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011950431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:03:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:03:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 17:03:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489555987] [2024-11-19 17:03:55,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:03:55,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 17:03:55,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:03:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 17:03:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:03:55,440 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:03:55,515 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-19 17:03:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 17:03:55,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 17:03:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:03:55,516 INFO L225 Difference]: With dead ends: 27 [2024-11-19 17:03:55,516 INFO L226 Difference]: Without dead ends: 23 [2024-11-19 17:03:55,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 17:03:55,518 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:03:55,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:03:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-19 17:03:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-19 17:03:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-19 17:03:55,528 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2024-11-19 17:03:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:03:55,529 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-19 17:03:55,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-19 17:03:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 17:03:55,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:55,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:55,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 17:03:55,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:55,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2024-11-19 17:03:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404066082] [2024-11-19 17:03:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404066082] [2024-11-19 17:03:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404066082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:03:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038990849] [2024-11-19 17:03:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:55,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:03:55,708 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) [2024-11-19 17:03:55,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 17:03:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:55,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 17:03:55,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:03:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:55,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:03:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038990849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:03:55,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:03:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 17:03:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156839220] [2024-11-19 17:03:55,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:03:55,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 17:03:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:03:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 17:03:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:03:55,996 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2024-11-19 17:03:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:03:56,102 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-19 17:03:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:03:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 17:03:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:03:56,104 INFO L225 Difference]: With dead ends: 43 [2024-11-19 17:03:56,104 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 17:03:56,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-19 17:03:56,105 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:03:56,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:03:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 17:03:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-19 17:03:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-19 17:03:56,111 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2024-11-19 17:03:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:03:56,111 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-19 17:03:56,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2024-11-19 17:03:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-19 17:03:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 17:03:56,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:56,112 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:56,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 17:03:56,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:56,314 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:56,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2024-11-19 17:03:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271757113] [2024-11-19 17:03:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:57,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271757113] [2024-11-19 17:03:57,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271757113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:03:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219419982] [2024-11-19 17:03:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:57,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:57,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:03:57,039 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) [2024-11-19 17:03:57,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 17:03:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:57,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 17:03:57,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:03:57,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 17:03:57,278 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 [2024-11-19 17:03:57,381 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 19 treesize of output 11 [2024-11-19 17:03:57,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 17:03:57,446 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 15 treesize of output 7 [2024-11-19 17:03:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:57,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:03:57,621 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 20 treesize of output 18 [2024-11-19 17:03:57,626 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 28 treesize of output 24 [2024-11-19 17:03:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219419982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:03:57,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:03:57,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 27 [2024-11-19 17:03:57,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47646553] [2024-11-19 17:03:57,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:03:57,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 17:03:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:03:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 17:03:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2024-11-19 17:03:57,704 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 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) [2024-11-19 17:03:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:03:57,987 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2024-11-19 17:03:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 17:03:57,988 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 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 23 [2024-11-19 17:03:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:03:57,988 INFO L225 Difference]: With dead ends: 50 [2024-11-19 17:03:57,988 INFO L226 Difference]: Without dead ends: 30 [2024-11-19 17:03:57,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2024-11-19 17:03:57,990 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:03:57,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:03:57,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-19 17:03:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-19 17:03:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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) [2024-11-19 17:03:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-19 17:03:57,995 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2024-11-19 17:03:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:03:57,996 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-19 17:03:57,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 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) [2024-11-19 17:03:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-19 17:03:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 17:03:57,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:57,997 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:58,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 17:03:58,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:58,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:58,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2024-11-19 17:03:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:58,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554231058] [2024-11-19 17:03:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:58,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554231058] [2024-11-19 17:03:58,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554231058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:03:58,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837485376] [2024-11-19 17:03:58,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:03:58,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:58,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:03:58,307 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) [2024-11-19 17:03:58,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 17:03:58,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:03:58,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:03:58,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 17:03:58,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:03:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:58,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:03:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:58,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837485376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:03:58,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:03:58,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-19 17:03:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639524357] [2024-11-19 17:03:58,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:03:58,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 17:03:58,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:03:58,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 17:03:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 17:03:58,515 INFO L87 Difference]: Start difference. First operand 28 states and 31 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) [2024-11-19 17:03:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:03:58,628 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-19 17:03:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:03:58,629 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 26 [2024-11-19 17:03:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:03:58,630 INFO L225 Difference]: With dead ends: 57 [2024-11-19 17:03:58,630 INFO L226 Difference]: Without dead ends: 37 [2024-11-19 17:03:58,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-19 17:03:58,632 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:03:58,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 35 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:03:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-19 17:03:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-11-19 17:03:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:03:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-19 17:03:58,641 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 26 [2024-11-19 17:03:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:03:58,641 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-19 17:03:58,641 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) [2024-11-19 17:03:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-19 17:03:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 17:03:58,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:03:58,642 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:03:58,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 17:03:58,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:58,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:03:58,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:03:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1198950171, now seen corresponding path program 3 times [2024-11-19 17:03:58,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:03:58,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375586827] [2024-11-19 17:03:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:03:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:03:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:03:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:03:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:03:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375586827] [2024-11-19 17:03:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375586827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:03:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62261777] [2024-11-19 17:03:59,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:03:59,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:03:59,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:03:59,803 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) [2024-11-19 17:03:59,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 17:03:59,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 17:03:59,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:03:59,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 17:03:59,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:03:59,973 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 19 treesize of output 1 [2024-11-19 17:04:00,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-19 17:04:00,249 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 [2024-11-19 17:04:00,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 17:04:00,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-19 17:04:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:00,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:00,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 40 [2024-11-19 17:04:00,741 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 15 treesize of output 7 [2024-11-19 17:04:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:00,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:01,357 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 51 treesize of output 47 [2024-11-19 17:04:01,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:01,366 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 326 treesize of output 294 [2024-11-19 17:04:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:01,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62261777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:01,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:01,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 49 [2024-11-19 17:04:01,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999195803] [2024-11-19 17:04:01,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:01,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 17:04:01,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:01,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 17:04:01,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=1941, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 17:04:01,468 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 49 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:04:02,294 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2024-11-19 17:04:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 17:04:02,296 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 49 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-19 17:04:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:04:02,313 INFO L225 Difference]: With dead ends: 68 [2024-11-19 17:04:02,314 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 17:04:02,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=722, Invalid=3310, Unknown=0, NotChecked=0, Total=4032 [2024-11-19 17:04:02,316 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 17:04:02,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 68 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 17:04:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 17:04:02,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-19 17:04:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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) [2024-11-19 17:04:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2024-11-19 17:04:02,323 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2024-11-19 17:04:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:04:02,323 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2024-11-19 17:04:02,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 49 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2024-11-19 17:04:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 17:04:02,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:04:02,325 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:04:02,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 17:04:02,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:02,526 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:04:02,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:04:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1722173266, now seen corresponding path program 4 times [2024-11-19 17:04:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:04:02,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124198124] [2024-11-19 17:04:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:04:02,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:04:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:04:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124198124] [2024-11-19 17:04:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124198124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:04:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653732329] [2024-11-19 17:04:02,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 17:04:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:04:02,699 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) [2024-11-19 17:04:02,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 17:04:02,760 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 17:04:02,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:04:02,761 WARN L253 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 17:04:02,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:04:02,770 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 [2024-11-19 17:04:02,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-19 17:04:02,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 31 [2024-11-19 17:04:03,041 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 [2024-11-19 17:04:03,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 17:04:03,277 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 53 treesize of output 30 [2024-11-19 17:04:03,488 INFO L349 Elim1Store]: treesize reduction 26, result has 70.1 percent of original size [2024-11-19 17:04:03,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 92 [2024-11-19 17:04:03,503 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 38 treesize of output 15 [2024-11-19 17:04:03,713 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 15 treesize of output 7 [2024-11-19 17:04:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:03,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653732329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:04,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:04,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 22] total 50 [2024-11-19 17:04:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933565657] [2024-11-19 17:04:04,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:04,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-19 17:04:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:04,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-19 17:04:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2155, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 17:04:04,632 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 50 states, 50 states have (on average 1.66) internal successors, (83), 50 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:04:09,312 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2024-11-19 17:04:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-19 17:04:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.66) internal successors, (83), 50 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2024-11-19 17:04:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:04:09,315 INFO L225 Difference]: With dead ends: 139 [2024-11-19 17:04:09,315 INFO L226 Difference]: Without dead ends: 106 [2024-11-19 17:04:09,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5727 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2360, Invalid=16272, Unknown=0, NotChecked=0, Total=18632 [2024-11-19 17:04:09,320 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 201 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 17:04:09,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 169 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 17:04:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-19 17:04:09,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 64. [2024-11-19 17:04:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 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) [2024-11-19 17:04:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2024-11-19 17:04:09,336 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 32 [2024-11-19 17:04:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:04:09,336 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2024-11-19 17:04:09,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.66) internal successors, (83), 50 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2024-11-19 17:04:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 17:04:09,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:04:09,337 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:04:09,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 17:04:09,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:09,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:04:09,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:04:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1970704919, now seen corresponding path program 5 times [2024-11-19 17:04:09,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:04:09,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431341071] [2024-11-19 17:04:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:04:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:04:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:09,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:04:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431341071] [2024-11-19 17:04:09,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431341071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:04:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726619329] [2024-11-19 17:04:09,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 17:04:09,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:04:09,713 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) [2024-11-19 17:04:09,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 17:04:09,800 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-19 17:04:09,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:04:09,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 17:04:09,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:04:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:09,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726619329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:09,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:09,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-19 17:04:09,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403194159] [2024-11-19 17:04:09,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:09,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 17:04:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 17:04:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-19 17:04:09,979 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:10,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:04:10,085 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2024-11-19 17:04:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 17:04:10,086 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 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 38 [2024-11-19 17:04:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:04:10,086 INFO L225 Difference]: With dead ends: 126 [2024-11-19 17:04:10,087 INFO L226 Difference]: Without dead ends: 105 [2024-11-19 17:04:10,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-19 17:04:10,088 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:04:10,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:04:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-19 17:04:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2024-11-19 17:04:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 85 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-11-19 17:04:10,114 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 38 [2024-11-19 17:04:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:04:10,114 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-11-19 17:04:10,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-11-19 17:04:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 17:04:10,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:04:10,116 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:04:10,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 17:04:10,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:10,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:04:10,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:04:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash -413661330, now seen corresponding path program 6 times [2024-11-19 17:04:10,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:04:10,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855060231] [2024-11-19 17:04:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:04:10,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:04:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:10,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:04:10,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855060231] [2024-11-19 17:04:10,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855060231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:04:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026058818] [2024-11-19 17:04:10,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 17:04:10,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:04:10,495 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) [2024-11-19 17:04:10,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 17:04:10,574 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 17:04:10,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:04:10,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 17:04:10,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:04:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 17:04:10,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 17:04:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026058818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:11,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 17] total 33 [2024-11-19 17:04:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947606718] [2024-11-19 17:04:11,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:11,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 17:04:11,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 17:04:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 17:04:11,151 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 33 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:04:11,656 INFO L93 Difference]: Finished difference Result 137 states and 166 transitions. [2024-11-19 17:04:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 17:04:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-19 17:04:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:04:11,657 INFO L225 Difference]: With dead ends: 137 [2024-11-19 17:04:11,657 INFO L226 Difference]: Without dead ends: 69 [2024-11-19 17:04:11,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=487, Invalid=1963, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 17:04:11,658 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 135 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:04:11,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 37 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:04:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-19 17:04:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 48. [2024-11-19 17:04:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 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) [2024-11-19 17:04:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-11-19 17:04:11,671 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 38 [2024-11-19 17:04:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:04:11,671 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-11-19 17:04:11,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-11-19 17:04:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 17:04:11,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:04:11,672 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:04:11,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 17:04:11,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:11,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:04:11,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:04:11,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1332664835, now seen corresponding path program 7 times [2024-11-19 17:04:11,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:04:11,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094496929] [2024-11-19 17:04:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:04:11,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:04:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:04:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094496929] [2024-11-19 17:04:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094496929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:04:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239648992] [2024-11-19 17:04:13,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 17:04:13,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:04:13,425 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) [2024-11-19 17:04:13,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 17:04:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:13,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-19 17:04:13,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:04:13,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 17:04:13,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 17:04:13,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:13,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-19 17:04:13,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-19 17:04:13,842 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 [2024-11-19 17:04:13,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 17:04:14,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-19 17:04:14,221 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 46 treesize of output 23 [2024-11-19 17:04:14,332 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 51 treesize of output 28 [2024-11-19 17:04:14,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:14,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 24 [2024-11-19 17:04:14,376 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 15 treesize of output 7 [2024-11-19 17:04:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:14,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:15,275 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 159 treesize of output 151 [2024-11-19 17:04:15,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:15,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 346084654 treesize of output 329307438 [2024-11-19 17:04:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:15,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239648992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:15,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 62 [2024-11-19 17:04:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592898837] [2024-11-19 17:04:15,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:15,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-19 17:04:15,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-19 17:04:15,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=3306, Unknown=0, NotChecked=0, Total=3782 [2024-11-19 17:04:15,966 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:04:17,351 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-19 17:04:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 17:04:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-19 17:04:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:04:17,354 INFO L225 Difference]: With dead ends: 58 [2024-11-19 17:04:17,354 INFO L226 Difference]: Without dead ends: 54 [2024-11-19 17:04:17,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=644, Invalid=4186, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 17:04:17,356 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 17:04:17,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 114 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 17:04:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-19 17:04:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-19 17:04:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-11-19 17:04:17,368 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 41 [2024-11-19 17:04:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:04:17,368 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-11-19 17:04:17,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 62 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-11-19 17:04:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 17:04:17,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:04:17,369 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:04:17,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 17:04:17,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 17:04:17,570 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:04:17,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:04:17,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1439099252, now seen corresponding path program 8 times [2024-11-19 17:04:17,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:04:17,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564334606] [2024-11-19 17:04:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:04:17,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:04:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:17,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:04:17,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564334606] [2024-11-19 17:04:17,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564334606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:04:17,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795098913] [2024-11-19 17:04:17,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:04:17,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:17,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:04:17,809 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) [2024-11-19 17:04:17,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 17:04:17,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:04:17,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:04:17,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 17:04:17,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:04:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:18,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:18,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795098913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:18,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:18,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-19 17:04:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695918515] [2024-11-19 17:04:18,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:18,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 17:04:18,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 17:04:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-19 17:04:18,210 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:04:18,390 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2024-11-19 17:04:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 17:04:18,391 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-19 17:04:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:04:18,393 INFO L225 Difference]: With dead ends: 82 [2024-11-19 17:04:18,393 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 17:04:18,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-19 17:04:18,395 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:04:18,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:04:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 17:04:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-19 17:04:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-19 17:04:18,412 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 44 [2024-11-19 17:04:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:04:18,412 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-19 17:04:18,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-19 17:04:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 17:04:18,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:04:18,414 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:04:18,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 17:04:18,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:18,615 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:04:18,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:04:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1953271904, now seen corresponding path program 9 times [2024-11-19 17:04:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:04:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953050424] [2024-11-19 17:04:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:04:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:04:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:04:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:04:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953050424] [2024-11-19 17:04:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953050424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:04:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216126421] [2024-11-19 17:04:20,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:04:20,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:04:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:04:20,894 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) [2024-11-19 17:04:20,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 17:04:20,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-19 17:04:20,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:04:20,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-19 17:04:21,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:04:21,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 17:04:21,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-19 17:04:21,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:21,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-19 17:04:21,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2024-11-19 17:04:21,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:21,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 53 [2024-11-19 17:04:21,685 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 [2024-11-19 17:04:21,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 17:04:21,940 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 46 treesize of output 23 [2024-11-19 17:04:22,105 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 56 treesize of output 33 [2024-11-19 17:04:22,294 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 65 treesize of output 42 [2024-11-19 17:04:22,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 17:04:22,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:04:22,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 172 [2024-11-19 17:04:22,708 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 40 treesize of output 17 [2024-11-19 17:04:23,345 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 15 treesize of output 7 [2024-11-19 17:04:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 10 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:23,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:04:48,875 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 55 treesize of output 53 [2024-11-19 17:04:48,882 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 47214 treesize of output 46958 [2024-11-19 17:04:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:04:49,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216126421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:04:49,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:04:49,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31, 31] total 83 [2024-11-19 17:04:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646969153] [2024-11-19 17:04:49,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:04:49,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-19 17:04:49,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:04:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-19 17:04:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=6093, Unknown=5, NotChecked=0, Total=6806 [2024-11-19 17:04:49,071 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 83 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 83 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:04:54,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-19 17:05:02,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-19 17:05:07,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-19 17:05:09,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-19 17:05:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:05:17,977 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2024-11-19 17:05:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-19 17:05:17,978 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 83 states have internal predecessors, (125), 0 states have call successors, (0), 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 [2024-11-19 17:05:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:05:17,978 INFO L225 Difference]: With dead ends: 129 [2024-11-19 17:05:17,979 INFO L226 Difference]: Without dead ends: 121 [2024-11-19 17:05:17,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8045 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=2729, Invalid=23026, Unknown=5, NotChecked=0, Total=25760 [2024-11-19 17:05:17,983 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 479 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2024-11-19 17:05:17,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 143 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2024-11-19 17:05:17,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-19 17:05:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 69. [2024-11-19 17:05:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:05:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2024-11-19 17:05:18,010 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 47 [2024-11-19 17:05:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:05:18,011 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2024-11-19 17:05:18,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 83 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:05:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2024-11-19 17:05:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 17:05:18,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:05:18,012 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:05:18,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 17:05:18,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 17:05:18,212 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:05:18,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:05:18,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1872884055, now seen corresponding path program 10 times [2024-11-19 17:05:18,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:05:18,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331060679] [2024-11-19 17:05:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:05:18,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:05:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:05:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 95 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:05:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331060679] [2024-11-19 17:05:18,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331060679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:05:18,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655668734] [2024-11-19 17:05:18,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 17:05:18,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:05:18,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:05:18,531 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) [2024-11-19 17:05:18,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 17:05:18,644 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 17:05:18,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:05:18,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 17:05:18,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:05:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 108 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 17:05:18,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:05:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 108 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 17:05:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655668734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:05:18,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:05:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 28 [2024-11-19 17:05:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795712335] [2024-11-19 17:05:18,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:05:18,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 17:05:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:05:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 17:05:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2024-11-19 17:05:18,983 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 28 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) [2024-11-19 17:05:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:05:19,175 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2024-11-19 17:05:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 17:05:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 28 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 [2024-11-19 17:05:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:05:19,175 INFO L225 Difference]: With dead ends: 145 [2024-11-19 17:05:19,176 INFO L226 Difference]: Without dead ends: 112 [2024-11-19 17:05:19,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 17:05:19,176 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:05:19,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 35 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:05:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-19 17:05:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2024-11-19 17:05:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 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) [2024-11-19 17:05:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-19 17:05:19,205 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 56 [2024-11-19 17:05:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:05:19,205 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-19 17:05:19,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0714285714285716) internal successors, (86), 28 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) [2024-11-19 17:05:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-19 17:05:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 17:05:19,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:05:19,206 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:05:19,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 17:05:19,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 17:05:19,407 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:05:19,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:05:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1629587630, now seen corresponding path program 11 times [2024-11-19 17:05:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:05:19,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171340895] [2024-11-19 17:05:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:05:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:05:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:05:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:05:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171340895] [2024-11-19 17:05:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171340895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:05:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047003434] [2024-11-19 17:05:19,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 17:05:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:05:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:05:19,696 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) [2024-11-19 17:05:19,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 17:05:19,872 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-19 17:05:19,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:05:19,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 17:05:19,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:05:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:20,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:05:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 79 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047003434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:05:20,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:05:20,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-19 17:05:20,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023893760] [2024-11-19 17:05:20,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:05:20,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 17:05:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:05:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 17:05:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-19 17:05:20,306 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 29 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:05:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:05:20,564 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2024-11-19 17:05:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 17:05:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 29 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2024-11-19 17:05:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:05:20,566 INFO L225 Difference]: With dead ends: 153 [2024-11-19 17:05:20,566 INFO L226 Difference]: Without dead ends: 123 [2024-11-19 17:05:20,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 87 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 17:05:20,567 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:05:20,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 34 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:05:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-19 17:05:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 75. [2024-11-19 17:05:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:05:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2024-11-19 17:05:20,596 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 56 [2024-11-19 17:05:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:05:20,596 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2024-11-19 17:05:20,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 29 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:05:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2024-11-19 17:05:20,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 17:05:20,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:05:20,597 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:05:20,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 17:05:20,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 17:05:20,798 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:05:20,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:05:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1384735285, now seen corresponding path program 12 times [2024-11-19 17:05:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:05:20,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270167897] [2024-11-19 17:05:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:05:20,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:05:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:05:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:05:21,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270167897] [2024-11-19 17:05:21,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270167897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:05:21,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075048671] [2024-11-19 17:05:21,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 17:05:21,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:05:21,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:05:21,111 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) [2024-11-19 17:05:21,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 17:05:21,374 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-19 17:05:21,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:05:21,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 17:05:21,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:05:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 70 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:21,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:05:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 70 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:05:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075048671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:05:21,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:05:21,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-19 17:05:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377021856] [2024-11-19 17:05:21,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:05:21,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 17:05:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:05:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 17:05:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-19 17:05:21,783 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 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) [2024-11-19 17:05:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:05:22,176 INFO L93 Difference]: Finished difference Result 121 states and 124 transitions. [2024-11-19 17:05:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 17:05:22,177 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 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) Word has length 56 [2024-11-19 17:05:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:05:22,178 INFO L225 Difference]: With dead ends: 121 [2024-11-19 17:05:22,178 INFO L226 Difference]: Without dead ends: 117 [2024-11-19 17:05:22,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 86 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2024-11-19 17:05:22,179 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 67 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:05:22,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 33 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:05:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-19 17:05:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 72. [2024-11-19 17:05:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 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) [2024-11-19 17:05:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-19 17:05:22,205 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 56 [2024-11-19 17:05:22,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:05:22,205 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-19 17:05:22,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 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) [2024-11-19 17:05:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-19 17:05:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 17:05:22,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:05:22,206 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:05:22,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 17:05:22,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 17:05:22,406 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:05:22,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:05:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2108285950, now seen corresponding path program 13 times [2024-11-19 17:05:22,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:05:22,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184673224] [2024-11-19 17:05:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:05:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:05:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat