./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/copysome2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/copysome2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 498a9d01a4c9c1e07ef15169be61a1aa89cf7662222e03da034e67869e2f7c71 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:35:05,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:35:05,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:35:05,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:35:05,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:35:05,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:35:05,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:35:05,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:35:05,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:35:05,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:35:05,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:35:06,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:35:06,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:35:06,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:35:06,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:35:06,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:35:06,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:35:06,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:35:06,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:35:06,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:35:06,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:35:06,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:35:06,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:35:06,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:35:06,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:35:06,009 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:35:06,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:35:06,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:35:06,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:35:06,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:35:06,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:35:06,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:35:06,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:35:06,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:35:06,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:35:06,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:35:06,012 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:35:06,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:35:06,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:35:06,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:35:06,013 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:35:06,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:35:06,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 498a9d01a4c9c1e07ef15169be61a1aa89cf7662222e03da034e67869e2f7c71 [2024-11-11 15:35:06,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:35:06,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:35:06,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:35:06,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:35:06,299 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:35:06,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/copysome2-2.i [2024-11-11 15:35:07,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:35:07,907 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:35:07,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome2-2.i [2024-11-11 15:35:07,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e01b63c8/3370a9c772d149c99597b3fa81d11a0e/FLAG1dfeb9a7c [2024-11-11 15:35:07,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e01b63c8/3370a9c772d149c99597b3fa81d11a0e [2024-11-11 15:35:07,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:35:07,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:35:07,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:35:07,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:35:07,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:35:07,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:35:07" (1/1) ... [2024-11-11 15:35:07,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668657c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:07, skipping insertion in model container [2024-11-11 15:35:07,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:35:07" (1/1) ... [2024-11-11 15:35:07,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:35:08,123 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-programs/copysome2-2.i[804,817] [2024-11-11 15:35:08,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:35:08,154 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:35:08,166 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-programs/copysome2-2.i[804,817] [2024-11-11 15:35:08,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:35:08,200 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:35:08,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08 WrapperNode [2024-11-11 15:35:08,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:35:08,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:35:08,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:35:08,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:35:08,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,241 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2024-11-11 15:35:08,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:35:08,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:35:08,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:35:08,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:35:08,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,277 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 4, 4, 3]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 3, 2, 1]. [2024-11-11 15:35:08,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:35:08,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:35:08,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:35:08,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:35:08,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (1/1) ... [2024-11-11 15:35:08,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:35:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:08,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 15:35:08,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 15:35:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:35:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:35:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:35:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:35:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 15:35:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:35:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:35:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:35:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:35:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 15:35:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:35:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:35:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:35:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:35:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:35:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 15:35:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:35:08,479 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:35:08,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:35:08,730 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-11 15:35:08,730 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:35:08,743 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:35:08,744 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-11 15:35:08,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:35:08 BoogieIcfgContainer [2024-11-11 15:35:08,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:35:08,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:35:08,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:35:08,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:35:08,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:35:07" (1/3) ... [2024-11-11 15:35:08,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c166f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:35:08, skipping insertion in model container [2024-11-11 15:35:08,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:35:08" (2/3) ... [2024-11-11 15:35:08,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c166f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:35:08, skipping insertion in model container [2024-11-11 15:35:08,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:35:08" (3/3) ... [2024-11-11 15:35:08,755 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome2-2.i [2024-11-11 15:35:08,773 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:35:08,773 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:35:08,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:35:08,847 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;@6d5eaaf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:35:08,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:35:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 15:35:08,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:08,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:08,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:08,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 551047633, now seen corresponding path program 1 times [2024-11-11 15:35:08,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:08,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420593524] [2024-11-11 15:35:08,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:08,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:35:09,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420593524] [2024-11-11 15:35:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420593524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:35:09,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:35:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 15:35:09,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197687099] [2024-11-11 15:35:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:35:09,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:35:09,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:09,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:35:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:35:09,138 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:09,209 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2024-11-11 15:35:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:35:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-11 15:35:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:09,217 INFO L225 Difference]: With dead ends: 50 [2024-11-11 15:35:09,217 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 15:35:09,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:35:09,222 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:09,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:35:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 15:35:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-11 15:35:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-11 15:35:09,252 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 11 [2024-11-11 15:35:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:09,252 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-11 15:35:09,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-11 15:35:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 15:35:09,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:09,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:09,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:35:09,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:09,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1141073570, now seen corresponding path program 1 times [2024-11-11 15:35:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017009306] [2024-11-11 15:35:09,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:35:09,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017009306] [2024-11-11 15:35:09,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017009306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059192092] [2024-11-11 15:35:09,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:09,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:09,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:35:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:09,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:35:09,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:35:09,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:35:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059192092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:09,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:09,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-11 15:35:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931421833] [2024-11-11 15:35:09,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:09,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 15:35:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 15:35:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:35:09,609 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:09,719 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2024-11-11 15:35:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 15:35:09,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-11 15:35:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:09,720 INFO L225 Difference]: With dead ends: 63 [2024-11-11 15:35:09,720 INFO L226 Difference]: Without dead ends: 46 [2024-11-11 15:35:09,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:35:09,722 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:09,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 30 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:35:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-11 15:35:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-11 15:35:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 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) [2024-11-11 15:35:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-11 15:35:09,730 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 19 [2024-11-11 15:35:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:09,730 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-11 15:35:09,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-11 15:35:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 15:35:09,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:09,732 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:09,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:35:09,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:09,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:09,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1011418317, now seen corresponding path program 2 times [2024-11-11 15:35:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300278691] [2024-11-11 15:35:09,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:09,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-11 15:35:10,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300278691] [2024-11-11 15:35:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300278691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:35:10,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:35:10,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:35:10,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957788628] [2024-11-11 15:35:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:35:10,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:35:10,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:10,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:35:10,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:35:10,273 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:10,317 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2024-11-11 15:35:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:35:10,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 43 [2024-11-11 15:35:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:10,319 INFO L225 Difference]: With dead ends: 78 [2024-11-11 15:35:10,319 INFO L226 Difference]: Without dead ends: 46 [2024-11-11 15:35:10,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:35:10,320 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:10,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:35:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-11 15:35:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-11 15:35:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-11 15:35:10,328 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 43 [2024-11-11 15:35:10,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:10,329 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-11 15:35:10,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-11 15:35:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 15:35:10,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:10,331 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:10,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 15:35:10,331 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:10,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 9650037, now seen corresponding path program 1 times [2024-11-11 15:35:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:10,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194563553] [2024-11-11 15:35:10,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:10,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-11 15:35:10,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194563553] [2024-11-11 15:35:10,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194563553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122862298] [2024-11-11 15:35:10,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:10,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:10,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:35:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:10,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:35:10,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 15:35:10,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 15:35:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122862298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:10,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-11 15:35:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996810373] [2024-11-11 15:35:10,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:10,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-11 15:35:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-11 15:35:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2024-11-11 15:35:10,772 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:11,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:11,126 INFO L93 Difference]: Finished difference Result 145 states and 202 transitions. [2024-11-11 15:35:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-11 15:35:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 43 [2024-11-11 15:35:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:11,131 INFO L225 Difference]: With dead ends: 145 [2024-11-11 15:35:11,131 INFO L226 Difference]: Without dead ends: 110 [2024-11-11 15:35:11,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2024-11-11 15:35:11,133 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 117 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:11,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 63 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:35:11,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-11 15:35:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-11 15:35:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.238532110091743) internal successors, (135), 109 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-11 15:35:11,152 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 43 [2024-11-11 15:35:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:11,153 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-11 15:35:11,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-11 15:35:11,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-11 15:35:11,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:11,156 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:11,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:35:11,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-11 15:35:11,357 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:11,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash 762574501, now seen corresponding path program 2 times [2024-11-11 15:35:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:11,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043057067] [2024-11-11 15:35:11,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:11,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-11 15:35:11,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:11,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043057067] [2024-11-11 15:35:11,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043057067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:11,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208386933] [2024-11-11 15:35:11,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:35:11,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:11,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:11,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:35:12,148 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:35:12,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:12,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-11 15:35:12,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-11 15:35:12,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-11 15:35:12,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208386933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:12,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:12,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-11 15:35:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094587611] [2024-11-11 15:35:12,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:12,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-11 15:35:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-11 15:35:12,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-11 15:35:12,541 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:13,092 INFO L93 Difference]: Finished difference Result 895 states and 1184 transitions. [2024-11-11 15:35:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-11 15:35:13,094 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-11 15:35:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:13,102 INFO L225 Difference]: With dead ends: 895 [2024-11-11 15:35:13,102 INFO L226 Difference]: Without dead ends: 812 [2024-11-11 15:35:13,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-11 15:35:13,104 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 422 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:13,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 54 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 15:35:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-11-11 15:35:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 222. [2024-11-11 15:35:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.244343891402715) internal successors, (275), 221 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 275 transitions. [2024-11-11 15:35:13,158 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 275 transitions. Word has length 107 [2024-11-11 15:35:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:13,158 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 275 transitions. [2024-11-11 15:35:13,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 275 transitions. [2024-11-11 15:35:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-11 15:35:13,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:13,164 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 19, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:13,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-11 15:35:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:13,365 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:13,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash 518233129, now seen corresponding path program 3 times [2024-11-11 15:35:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:13,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16021002] [2024-11-11 15:35:13,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2024-11-11 15:35:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16021002] [2024-11-11 15:35:14,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16021002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829523764] [2024-11-11 15:35:14,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:35:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:14,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:14,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:14,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:35:15,342 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-11 15:35:15,342 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:15,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 15:35:15,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 2553 trivial. 0 not checked. [2024-11-11 15:35:15,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 2553 trivial. 0 not checked. [2024-11-11 15:35:15,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829523764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:15,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:15,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 5, 5] total 35 [2024-11-11 15:35:15,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447922076] [2024-11-11 15:35:15,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:15,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-11 15:35:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-11 15:35:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=709, Unknown=0, NotChecked=0, Total=1190 [2024-11-11 15:35:15,794 INFO L87 Difference]: Start difference. First operand 222 states and 275 transitions. Second operand has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:16,966 INFO L93 Difference]: Finished difference Result 452 states and 584 transitions. [2024-11-11 15:35:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-11 15:35:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 0 states have call successors, (0), 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 219 [2024-11-11 15:35:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:16,970 INFO L225 Difference]: With dead ends: 452 [2024-11-11 15:35:16,970 INFO L226 Difference]: Without dead ends: 285 [2024-11-11 15:35:16,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1434, Invalid=2472, Unknown=0, NotChecked=0, Total=3906 [2024-11-11 15:35:16,976 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 604 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:16,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 76 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 15:35:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-11 15:35:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 278. [2024-11-11 15:35:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.0722021660649819) internal successors, (297), 277 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 297 transitions. [2024-11-11 15:35:17,007 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 297 transitions. Word has length 219 [2024-11-11 15:35:17,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:17,010 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 297 transitions. [2024-11-11 15:35:17,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.857142857142857) internal successors, (100), 35 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 297 transitions. [2024-11-11 15:35:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-11 15:35:17,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:17,013 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:17,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:35:17,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:17,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:17,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 87947340, now seen corresponding path program 1 times [2024-11-11 15:35:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718837086] [2024-11-11 15:35:17,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2024-11-11 15:35:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718837086] [2024-11-11 15:35:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718837086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:18,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000713886] [2024-11-11 15:35:18,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:18,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:18,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:18,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:18,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:35:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:18,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-11 15:35:18,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2024-11-11 15:35:19,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:35:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2024-11-11 15:35:20,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000713886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:35:20,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:35:20,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 59 [2024-11-11 15:35:20,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581411913] [2024-11-11 15:35:20,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:35:20,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-11 15:35:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-11 15:35:20,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-11 15:35:20,300 INFO L87 Difference]: Start difference. First operand 278 states and 297 transitions. Second operand has 59 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:21,429 INFO L93 Difference]: Finished difference Result 1511 states and 1913 transitions. [2024-11-11 15:35:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-11 15:35:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 0 states have call successors, (0), 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 227 [2024-11-11 15:35:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:21,434 INFO L225 Difference]: With dead ends: 1511 [2024-11-11 15:35:21,435 INFO L226 Difference]: Without dead ends: 1290 [2024-11-11 15:35:21,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-11 15:35:21,440 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 756 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:21,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 62 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 15:35:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-11-11 15:35:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 462. [2024-11-11 15:35:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.1258134490238612) internal successors, (519), 461 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 519 transitions. [2024-11-11 15:35:21,489 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 519 transitions. Word has length 227 [2024-11-11 15:35:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:21,492 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 519 transitions. [2024-11-11 15:35:21,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 519 transitions. [2024-11-11 15:35:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-11 15:35:21,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:21,502 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 35, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:21,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-11 15:35:21,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:21,703 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:21,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 533193997, now seen corresponding path program 4 times [2024-11-11 15:35:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093437005] [2024-11-11 15:35:21,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12488 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 9352 trivial. 0 not checked. [2024-11-11 15:35:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093437005] [2024-11-11 15:35:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093437005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783017277] [2024-11-11 15:35:26,453 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:35:26,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:26,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:26,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:26,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:35:26,931 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:35:26,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:35:26,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:35:26,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:35:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12488 backedges. 2450 proven. 0 refuted. 0 times theorem prover too weak. 10038 trivial. 0 not checked. [2024-11-11 15:35:27,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:35:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783017277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:35:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:35:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [59] total 61 [2024-11-11 15:35:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007124942] [2024-11-11 15:35:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:35:27,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:35:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:35:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:35:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2024-11-11 15:35:27,011 INFO L87 Difference]: Start difference. First operand 462 states and 519 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:35:27,105 INFO L93 Difference]: Finished difference Result 916 states and 1081 transitions. [2024-11-11 15:35:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:35:27,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 459 [2024-11-11 15:35:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:35:27,109 INFO L225 Difference]: With dead ends: 916 [2024-11-11 15:35:27,109 INFO L226 Difference]: Without dead ends: 662 [2024-11-11 15:35:27,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2024-11-11 15:35:27,112 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:35:27,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:35:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-11 15:35:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 622. [2024-11-11 15:35:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.0966183574879227) internal successors, (681), 621 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 681 transitions. [2024-11-11 15:35:27,177 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 681 transitions. Word has length 459 [2024-11-11 15:35:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:35:27,178 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 681 transitions. [2024-11-11 15:35:27,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:35:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 681 transitions. [2024-11-11 15:35:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-11 15:35:27,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:35:27,186 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:35:27,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 15:35:27,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:27,387 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:35:27,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:35:27,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1635541619, now seen corresponding path program 5 times [2024-11-11 15:35:27,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:35:27,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718079129] [2024-11-11 15:35:27,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:35:27,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:35:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:35:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12488 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 9352 trivial. 0 not checked. [2024-11-11 15:35:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:35:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718079129] [2024-11-11 15:35:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718079129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:35:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815354401] [2024-11-11 15:35:31,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:35:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:35:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:35:31,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:35:31,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process