./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/xor3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/xor3.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 c89c2ec3a6d8d6162c4c4ac97fed99fb9c343c7a2c2e60d87226da2b47103d07 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:01:05,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:01:05,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:01:05,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:01:05,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:01:05,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:01:05,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:01:05,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:01:05,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:01:05,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:01:05,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:01:05,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:01:05,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:01:05,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:01:05,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:01:05,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:01:05,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:01:05,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:01:05,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:01:05,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:01:05,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:01:05,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:01:05,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:01:05,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:01:05,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:01:05,202 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:01:05,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:01:05,203 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:01:05,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:01:05,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:01:05,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:01:05,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:01:05,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:01:05,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:01:05,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:01:05,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:01:05,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:01:05,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:01:05,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:01:05,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:01:05,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:01:05,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:01:05,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c89c2ec3a6d8d6162c4c4ac97fed99fb9c343c7a2c2e60d87226da2b47103d07 [2024-11-08 10:01:05,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:01:05,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:01:05,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:01:05,421 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:01:05,421 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:01:05,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/xor3.i [2024-11-08 10:01:06,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:01:06,750 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:01:06,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/xor3.i [2024-11-08 10:01:06,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3c87ff2/eff545e5c54347f5802abe71ae710f7e/FLAGd708a8652 [2024-11-08 10:01:06,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3c87ff2/eff545e5c54347f5802abe71ae710f7e [2024-11-08 10:01:06,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:01:06,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:01:06,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:01:06,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:01:06,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:01:06,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:06,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a97a447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06, skipping insertion in model container [2024-11-08 10:01:06,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:06,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:01:06,946 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/xor3.i[1297,1310] [2024-11-08 10:01:06,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:01:06,957 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:01:06,972 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/xor3.i[1297,1310] [2024-11-08 10:01:06,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:01:06,985 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:01:06,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06 WrapperNode [2024-11-08 10:01:06,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:01:06,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:01:06,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:01:06,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:01:06,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:06,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,013 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-11-08 10:01:07,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:01:07,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:01:07,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:01:07,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:01:07,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,058 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-08 10:01:07,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:01:07,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:01:07,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:01:07,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:01:07,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (1/1) ... [2024-11-08 10:01:07,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:01:07,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:07,136 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) [2024-11-08 10:01:07,151 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 [2024-11-08 10:01:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:01:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:01:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:01:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:01:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:01:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:01:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:01:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:01:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:01:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:01:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:01:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:01:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:01:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2024-11-08 10:01:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2024-11-08 10:01:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:01:07,267 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:01:07,269 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:01:07,406 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-08 10:01:07,407 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:01:07,419 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:01:07,420 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 10:01:07,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:01:07 BoogieIcfgContainer [2024-11-08 10:01:07,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:01:07,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:01:07,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:01:07,425 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:01:07,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:01:06" (1/3) ... [2024-11-08 10:01:07,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7a3471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:01:07, skipping insertion in model container [2024-11-08 10:01:07,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:01:06" (2/3) ... [2024-11-08 10:01:07,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7a3471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:01:07, skipping insertion in model container [2024-11-08 10:01:07,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:01:07" (3/3) ... [2024-11-08 10:01:07,428 INFO L112 eAbstractionObserver]: Analyzing ICFG xor3.i [2024-11-08 10:01:07,441 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:01:07,441 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:01:07,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:01:07,502 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;@4cf78b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:01:07,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:01:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 10:01:07,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:07,511 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:07,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:07,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash -803067684, now seen corresponding path program 1 times [2024-11-08 10:01:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:07,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144775915] [2024-11-08 10:01:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:07,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:07,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 10:01:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:07,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 10:01:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:07,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:01:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:01:07,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144775915] [2024-11-08 10:01:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144775915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108017923] [2024-11-08 10:01:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:07,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:07,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:07,808 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) [2024-11-08 10:01:07,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:01:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:07,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 10:01:07,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 10:01:07,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:01:07,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108017923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:07,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:01:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-08 10:01:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216064875] [2024-11-08 10:01:07,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:07,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:01:07,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:07,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:01:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:01:07,918 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:01:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:07,935 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-08 10:01:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:01:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-08 10:01:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:07,946 INFO L225 Difference]: With dead ends: 60 [2024-11-08 10:01:07,946 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 10:01:07,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:01:07,952 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:07,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 10:01:07,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-08 10:01:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-08 10:01:07,979 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 29 [2024-11-08 10:01:07,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:07,980 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-08 10:01:07,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:01:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-08 10:01:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 10:01:07,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:07,982 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:07,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:08,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-08 10:01:08,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:08,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1388705878, now seen corresponding path program 1 times [2024-11-08 10:01:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:08,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798434942] [2024-11-08 10:01:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 10:01:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 10:01:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:01:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:01:08,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:08,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798434942] [2024-11-08 10:01:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798434942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:08,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405578621] [2024-11-08 10:01:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:08,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:08,307 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) [2024-11-08 10:01:08,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:01:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:01:08,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 10:01:08,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:01:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405578621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:08,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:01:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 10:01:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916683913] [2024-11-08 10:01:08,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:08,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:01:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:01:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:01:08,389 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 10:01:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:08,404 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-08 10:01:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:01:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-08 10:01:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:08,407 INFO L225 Difference]: With dead ends: 54 [2024-11-08 10:01:08,407 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 10:01:08,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:01:08,409 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:08,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 10:01:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-08 10:01:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-08 10:01:08,415 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 29 [2024-11-08 10:01:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:08,415 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-08 10:01:08,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 10:01:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-08 10:01:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 10:01:08,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:08,416 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:08,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:08,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-08 10:01:08,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:08,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash -521397612, now seen corresponding path program 1 times [2024-11-08 10:01:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:08,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067540483] [2024-11-08 10:01:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:08,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 10:01:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 10:01:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 10:01:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 10:01:08,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067540483] [2024-11-08 10:01:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067540483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236199730] [2024-11-08 10:01:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:08,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:08,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:08,751 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) [2024-11-08 10:01:08,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:01:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:08,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:01:08,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:01:08,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:01:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236199730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:08,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:01:08,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 10:01:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117836505] [2024-11-08 10:01:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:08,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:01:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:01:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:01:08,839 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:01:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:08,854 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2024-11-08 10:01:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:01:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-08 10:01:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:08,856 INFO L225 Difference]: With dead ends: 58 [2024-11-08 10:01:08,856 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 10:01:08,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:01:08,857 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:08,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 10:01:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2024-11-08 10:01:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-08 10:01:08,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 31 [2024-11-08 10:01:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:08,864 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-08 10:01:08,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:01:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-08 10:01:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 10:01:08,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:08,866 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:08,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:09,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:09,069 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:09,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 989774991, now seen corresponding path program 1 times [2024-11-08 10:01:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348773227] [2024-11-08 10:01:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 10:01:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 10:01:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 10:01:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 10:01:09,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348773227] [2024-11-08 10:01:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348773227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354801198] [2024-11-08 10:01:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:09,175 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) [2024-11-08 10:01:09,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:01:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:01:09,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 10:01:09,249 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:01:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354801198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:01:09,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:01:09,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 10:01:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441136797] [2024-11-08 10:01:09,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:01:09,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:01:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:01:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:01:09,251 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:01:09,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:09,266 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2024-11-08 10:01:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:01:09,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-08 10:01:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:09,267 INFO L225 Difference]: With dead ends: 50 [2024-11-08 10:01:09,267 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 10:01:09,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:01:09,268 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:09,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 10:01:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-08 10:01:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-11-08 10:01:09,272 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 43 [2024-11-08 10:01:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:09,272 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-11-08 10:01:09,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:01:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-11-08 10:01:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 10:01:09,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:09,273 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:09,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:01:09,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:09,477 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:09,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:09,478 INFO L85 PathProgramCache]: Analyzing trace with hash 841012365, now seen corresponding path program 1 times [2024-11-08 10:01:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:09,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149029793] [2024-11-08 10:01:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:09,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 10:01:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 10:01:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 10:01:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:01:09,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:09,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149029793] [2024-11-08 10:01:09,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149029793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919088212] [2024-11-08 10:01:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:09,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:09,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:09,562 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) [2024-11-08 10:01:09,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:01:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:09,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:01:09,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 10:01:09,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 10:01:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919088212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:09,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-08 10:01:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826654434] [2024-11-08 10:01:09,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:09,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 10:01:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 10:01:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:01:09,699 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:09,742 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2024-11-08 10:01:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:01:09,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-08 10:01:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:09,743 INFO L225 Difference]: With dead ends: 76 [2024-11-08 10:01:09,743 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:01:09,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:01:09,745 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:09,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 145 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:01:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-11-08 10:01:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-08 10:01:09,751 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 45 [2024-11-08 10:01:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:09,751 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-08 10:01:09,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-08 10:01:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 10:01:09,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:09,756 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:09,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:01:09,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:09,957 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:09,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1172865982, now seen corresponding path program 2 times [2024-11-08 10:01:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207547644] [2024-11-08 10:01:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 10:01:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 10:01:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-08 10:01:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-08 10:01:10,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207547644] [2024-11-08 10:01:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207547644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038817407] [2024-11-08 10:01:10,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:01:10,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:10,053 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) [2024-11-08 10:01:10,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:01:10,125 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:01:10,125 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:10,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:01:10,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 10:01:10,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 10:01:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038817407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:10,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:10,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 10:01:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570751686] [2024-11-08 10:01:10,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:10,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:01:10,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:01:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:01:10,243 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:01:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:10,300 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2024-11-08 10:01:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 10:01:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-08 10:01:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:10,303 INFO L225 Difference]: With dead ends: 92 [2024-11-08 10:01:10,303 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 10:01:10,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:01:10,304 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:10,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 170 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 10:01:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-08 10:01:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-08 10:01:10,315 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 63 [2024-11-08 10:01:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:10,315 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-08 10:01:10,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:01:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-08 10:01:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 10:01:10,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:10,316 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:10,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 10:01:10,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:10,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:10,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 337623604, now seen corresponding path program 3 times [2024-11-08 10:01:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258344063] [2024-11-08 10:01:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:01:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 10:01:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 10:01:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-08 10:01:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258344063] [2024-11-08 10:01:10,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258344063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:10,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535479960] [2024-11-08 10:01:10,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:01:10,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:10,638 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) [2024-11-08 10:01:10,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:01:10,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 10:01:10,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:10,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:01:10,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-08 10:01:10,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-08 10:01:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535479960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:10,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:10,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 10:01:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780319702] [2024-11-08 10:01:10,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:10,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 10:01:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:10,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 10:01:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:01:10,806 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:10,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:10,832 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2024-11-08 10:01:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:01:10,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-08 10:01:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:10,833 INFO L225 Difference]: With dead ends: 119 [2024-11-08 10:01:10,833 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 10:01:10,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:01:10,834 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 60 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:10,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 142 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:01:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 10:01:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-08 10:01:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 81 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-11-08 10:01:10,841 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 77 [2024-11-08 10:01:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:10,841 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-11-08 10:01:10,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-11-08 10:01:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 10:01:10,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:10,843 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:10,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:11,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:11,044 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:11,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1539109088, now seen corresponding path program 4 times [2024-11-08 10:01:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008370952] [2024-11-08 10:01:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:11,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:11,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:01:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:11,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:01:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:11,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-11-08 10:01:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-08 10:01:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008370952] [2024-11-08 10:01:11,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008370952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:11,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879215957] [2024-11-08 10:01:11,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:01:11,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:11,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:11,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:01:11,391 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:01:11,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:11,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:01:11,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-08 10:01:11,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-08 10:01:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879215957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:11,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-08 10:01:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310912815] [2024-11-08 10:01:11,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:11,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 10:01:11,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:11,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 10:01:11,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:01:11,617 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:11,682 INFO L93 Difference]: Finished difference Result 173 states and 228 transitions. [2024-11-08 10:01:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 10:01:11,682 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 125 [2024-11-08 10:01:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:11,684 INFO L225 Difference]: With dead ends: 173 [2024-11-08 10:01:11,684 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 10:01:11,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:01:11,688 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:11,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 153 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 10:01:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-08 10:01:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.2) internal successors, (126), 105 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2024-11-08 10:01:11,697 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 125 [2024-11-08 10:01:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:11,700 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2024-11-08 10:01:11,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2024-11-08 10:01:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-08 10:01:11,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:11,702 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:11,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:01:11,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 10:01:11,903 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:11,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1742259448, now seen corresponding path program 5 times [2024-11-08 10:01:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398819703] [2024-11-08 10:01:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:12,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 10:01:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:12,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-08 10:01:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:12,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-08 10:01:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-11-08 10:01:12,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:12,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398819703] [2024-11-08 10:01:12,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398819703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:12,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818109350] [2024-11-08 10:01:12,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:01:12,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:12,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:12,450 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:12,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:01:13,243 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-08 10:01:13,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:13,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:01:13,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2024-11-08 10:01:13,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2024-11-08 10:01:13,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818109350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:13,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2024-11-08 10:01:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143933569] [2024-11-08 10:01:13,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:13,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 10:01:13,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:13,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 10:01:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 10:01:13,516 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:13,616 INFO L93 Difference]: Finished difference Result 232 states and 311 transitions. [2024-11-08 10:01:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 10:01:13,618 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 149 [2024-11-08 10:01:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:13,620 INFO L225 Difference]: With dead ends: 232 [2024-11-08 10:01:13,620 INFO L226 Difference]: Without dead ends: 169 [2024-11-08 10:01:13,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 10:01:13,623 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 223 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:13,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 401 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-08 10:01:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2024-11-08 10:01:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.2760736196319018) internal successors, (208), 163 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 214 transitions. [2024-11-08 10:01:13,639 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 214 transitions. Word has length 149 [2024-11-08 10:01:13,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:13,642 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 214 transitions. [2024-11-08 10:01:13,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.3333333333333335) internal successors, (130), 39 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 214 transitions. [2024-11-08 10:01:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-08 10:01:13,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:13,644 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 23, 23, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:13,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 10:01:13,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:13,845 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:13,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash -500243170, now seen corresponding path program 6 times [2024-11-08 10:01:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468239555] [2024-11-08 10:01:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:14,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 10:01:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:14,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-08 10:01:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:14,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-08 10:01:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 3589 trivial. 0 not checked. [2024-11-08 10:01:14,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468239555] [2024-11-08 10:01:14,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468239555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721159289] [2024-11-08 10:01:14,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:01:14,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:14,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:14,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:14,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:01:14,620 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 10:01:14,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:14,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:01:14,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 1634 proven. 4 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2024-11-08 10:01:14,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4118 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4114 trivial. 0 not checked. [2024-11-08 10:01:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721159289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:14,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:14,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5] total 32 [2024-11-08 10:01:14,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823367673] [2024-11-08 10:01:14,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:14,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 10:01:14,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 10:01:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:01:14,741 INFO L87 Difference]: Start difference. First operand 168 states and 214 transitions. Second operand has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:14,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:14,828 INFO L93 Difference]: Finished difference Result 298 states and 394 transitions. [2024-11-08 10:01:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 10:01:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 247 [2024-11-08 10:01:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:14,831 INFO L225 Difference]: With dead ends: 298 [2024-11-08 10:01:14,831 INFO L226 Difference]: Without dead ends: 179 [2024-11-08 10:01:14,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:01:14,833 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:14,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 224 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-08 10:01:14,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2024-11-08 10:01:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.260115606936416) internal successors, (218), 173 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 224 transitions. [2024-11-08 10:01:14,851 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 224 transitions. Word has length 247 [2024-11-08 10:01:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:14,851 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 224 transitions. [2024-11-08 10:01:14,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 224 transitions. [2024-11-08 10:01:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-08 10:01:14,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:14,858 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 24, 24, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:14,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 10:01:15,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 10:01:15,058 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:15,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1455750868, now seen corresponding path program 7 times [2024-11-08 10:01:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816786740] [2024-11-08 10:01:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:15,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 10:01:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:15,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-08 10:01:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:15,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-11-08 10:01:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:15,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816786740] [2024-11-08 10:01:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816786740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84454010] [2024-11-08 10:01:15,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:01:15,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:15,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:15,714 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:15,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:01:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:15,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 10:01:15,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:15,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4197 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84454010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:16,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:16,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-11-08 10:01:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697143438] [2024-11-08 10:01:16,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:16,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 10:01:16,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 10:01:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 10:01:16,691 INFO L87 Difference]: Start difference. First operand 178 states and 224 transitions. Second operand has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:16,810 INFO L93 Difference]: Finished difference Result 357 states and 474 transitions. [2024-11-08 10:01:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 10:01:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 257 [2024-11-08 10:01:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:16,813 INFO L225 Difference]: With dead ends: 357 [2024-11-08 10:01:16,814 INFO L226 Difference]: Without dead ends: 230 [2024-11-08 10:01:16,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 10:01:16,815 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:16,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 213 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:01:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-08 10:01:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-11-08 10:01:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.2) internal successors, (270), 225 states have internal predecessors, (270), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2024-11-08 10:01:16,825 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 257 [2024-11-08 10:01:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:16,825 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2024-11-08 10:01:16,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:16,825 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2024-11-08 10:01:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-08 10:01:16,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:16,828 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 42, 42, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:16,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 10:01:17,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 10:01:17,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:17,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash -608596576, now seen corresponding path program 8 times [2024-11-08 10:01:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:17,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298098946] [2024-11-08 10:01:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:18,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-08 10:01:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:18,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-08 10:01:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:18,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-11-08 10:01:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298098946] [2024-11-08 10:01:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298098946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114659093] [2024-11-08 10:01:18,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:01:18,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:18,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:18,657 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:18,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:01:18,864 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:01:18,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:18,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 10:01:18,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:19,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114659093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:21,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 105 [2024-11-08 10:01:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401732930] [2024-11-08 10:01:21,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:21,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-08 10:01:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-08 10:01:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2024-11-08 10:01:21,123 INFO L87 Difference]: Start difference. First operand 230 states and 276 transitions. Second operand has 105 states, 105 states have (on average 2.2285714285714286) internal successors, (234), 105 states have internal predecessors, (234), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:21,352 INFO L93 Difference]: Finished difference Result 461 states and 604 transitions. [2024-11-08 10:01:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-08 10:01:21,352 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.2285714285714286) internal successors, (234), 105 states have internal predecessors, (234), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 309 [2024-11-08 10:01:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:21,355 INFO L225 Difference]: With dead ends: 461 [2024-11-08 10:01:21,355 INFO L226 Difference]: Without dead ends: 334 [2024-11-08 10:01:21,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2024-11-08 10:01:21,358 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:21,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 123 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:01:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-08 10:01:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2024-11-08 10:01:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 329 states have (on average 1.1367781155015197) internal successors, (374), 329 states have internal predecessors, (374), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 380 transitions. [2024-11-08 10:01:21,369 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 380 transitions. Word has length 309 [2024-11-08 10:01:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:21,370 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 380 transitions. [2024-11-08 10:01:21,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.2285714285714286) internal successors, (234), 105 states have internal predecessors, (234), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 380 transitions. [2024-11-08 10:01:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-08 10:01:21,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:21,373 INFO L215 NwaCegarLoop]: trace histogram [102, 102, 42, 42, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:21,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 10:01:21,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 10:01:21,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:21,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1789066952, now seen corresponding path program 9 times [2024-11-08 10:01:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152772616] [2024-11-08 10:01:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:26,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-11-08 10:01:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:26,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-11-08 10:01:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:26,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-11-08 10:01:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 3621 trivial. 0 not checked. [2024-11-08 10:01:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152772616] [2024-11-08 10:01:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152772616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025491270] [2024-11-08 10:01:26,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:01:26,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:26,519 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:26,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:01:26,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-08 10:01:26,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:26,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:01:26,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 1634 proven. 36 refuted. 0 times theorem prover too weak. 12355 trivial. 0 not checked. [2024-11-08 10:01:27,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13989 trivial. 0 not checked. [2024-11-08 10:01:27,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025491270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:27,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:27,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 9, 9] total 119 [2024-11-08 10:01:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846257550] [2024-11-08 10:01:27,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:27,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-08 10:01:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-08 10:01:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2024-11-08 10:01:27,295 INFO L87 Difference]: Start difference. First operand 334 states and 380 transitions. Second operand has 119 states, 119 states have (on average 2.2436974789915967) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:27,576 INFO L93 Difference]: Finished difference Result 480 states and 580 transitions. [2024-11-08 10:01:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-08 10:01:27,578 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.2436974789915967) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 413 [2024-11-08 10:01:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:27,580 INFO L225 Difference]: With dead ends: 480 [2024-11-08 10:01:27,580 INFO L226 Difference]: Without dead ends: 353 [2024-11-08 10:01:27,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2024-11-08 10:01:27,583 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:27,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 445 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:01:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-08 10:01:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 352. [2024-11-08 10:01:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 347 states have (on average 1.1296829971181557) internal successors, (392), 347 states have internal predecessors, (392), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 398 transitions. [2024-11-08 10:01:27,592 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 398 transitions. Word has length 413 [2024-11-08 10:01:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:27,592 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 398 transitions. [2024-11-08 10:01:27,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.2436974789915967) internal successors, (267), 119 states have internal predecessors, (267), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 10:01:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 398 transitions. [2024-11-08 10:01:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-08 10:01:27,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:27,594 INFO L215 NwaCegarLoop]: trace histogram [103, 103, 42, 42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:27,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:27,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 10:01:27,798 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:27,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2114783590, now seen corresponding path program 10 times [2024-11-08 10:01:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:27,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284484513] [2024-11-08 10:01:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:27,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:32,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-11-08 10:01:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:32,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-11-08 10:01:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:32,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-11-08 10:01:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:01:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-08 10:01:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:01:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284484513] [2024-11-08 10:01:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284484513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:01:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548306749] [2024-11-08 10:01:32,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:01:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:01:32,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:01:32,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:01:32,950 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:01:32,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:01:32,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-08 10:01:32,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:01:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-08 10:01:33,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:01:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14390 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-08 10:01:41,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548306749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:01:41,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:01:41,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 211 [2024-11-08 10:01:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207763401] [2024-11-08 10:01:41,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:01:41,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 211 states [2024-11-08 10:01:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:01:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2024-11-08 10:01:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2024-11-08 10:01:41,536 INFO L87 Difference]: Start difference. First operand 352 states and 398 transitions. Second operand has 211 states, 211 states have (on average 2.1137440758293837) internal successors, (446), 211 states have internal predecessors, (446), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:01:42,287 INFO L93 Difference]: Finished difference Result 705 states and 901 transitions. [2024-11-08 10:01:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-11-08 10:01:42,287 INFO L78 Accepts]: Start accepts. Automaton has has 211 states, 211 states have (on average 2.1137440758293837) internal successors, (446), 211 states have internal predecessors, (446), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2024-11-08 10:01:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:01:42,289 INFO L225 Difference]: With dead ends: 705 [2024-11-08 10:01:42,289 INFO L226 Difference]: Without dead ends: 562 [2024-11-08 10:01:42,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2024-11-08 10:01:42,292 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:01:42,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 213 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:01:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-08 10:01:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-08 10:01:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 557 states have (on average 1.0807899461400359) internal successors, (602), 557 states have internal predecessors, (602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:01:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 608 transitions. [2024-11-08 10:01:42,306 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 608 transitions. Word has length 431 [2024-11-08 10:01:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:01:42,306 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 608 transitions. [2024-11-08 10:01:42,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 211 states, 211 states have (on average 2.1137440758293837) internal successors, (446), 211 states have internal predecessors, (446), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:01:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 608 transitions. [2024-11-08 10:01:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-11-08 10:01:42,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:01:42,310 INFO L215 NwaCegarLoop]: trace histogram [208, 208, 42, 42, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:01:42,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 10:01:42,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:01:42,510 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:01:42,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:01:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash 191987540, now seen corresponding path program 11 times [2024-11-08 10:01:42,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:01:42,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514879337] [2024-11-08 10:01:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:01:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:01:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:02,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2024-11-08 10:02:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:02,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-11-08 10:02:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:02,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2024-11-08 10:02:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:02:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 47045 backedges. 0 proven. 43264 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2024-11-08 10:02:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:02:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514879337] [2024-11-08 10:02:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514879337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:02:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627996140] [2024-11-08 10:02:02,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:02:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:02:02,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:02:02,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:02:02,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process