./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:37:27,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:37:27,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:37:27,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:37:27,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:37:27,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:37:27,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:37:27,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:37:27,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:37:27,112 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:37:27,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:37:27,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:37:27,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:37:27,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:37:27,114 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:37:27,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:37:27,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:37:27,115 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:37:27,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:37:27,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:37:27,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:37:27,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:37:27,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:37:27,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:37:27,117 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:37:27,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:37:27,118 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:37:27,118 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:37:27,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:37:27,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:37:27,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:37:27,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:37:27,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:27,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:37:27,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:37:27,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:37:27,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:37:27,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:37:27,121 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:37:27,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:37:27,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:37:27,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:37:27,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2024-11-18 14:37:27,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:37:27,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:37:27,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:37:27,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:37:27,426 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:37:27,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:28,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:37:28,963 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:37:28,964 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:28,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a496ee78/fc996b2f14134b589fb3003e66f30134/FLAG580eef203 [2024-11-18 14:37:29,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a496ee78/fc996b2f14134b589fb3003e66f30134 [2024-11-18 14:37:29,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:37:29,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:37:29,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:29,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:37:29,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:37:29,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2668ab1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29, skipping insertion in model container [2024-11-18 14:37:29,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:37:29,714 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2024-11-18 14:37:29,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:29,730 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:37:29,789 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2024-11-18 14:37:29,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:37:29,811 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:37:29,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29 WrapperNode [2024-11-18 14:37:29,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:37:29,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:29,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:37:29,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:37:29,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,874 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 419 [2024-11-18 14:37:29,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:37:29,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:37:29,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:37:29,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:37:29,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,914 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:37:29,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:37:29,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:37:29,936 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:37:29,936 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:37:29,937 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (1/1) ... [2024-11-18 14:37:29,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:37:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:29,973 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) [2024-11-18 14:37:29,977 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 [2024-11-18 14:37:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:37:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-11-18 14:37:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-11-18 14:37:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-18 14:37:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-18 14:37:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-11-18 14:37:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-11-18 14:37:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-11-18 14:37:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-11-18 14:37:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-11-18 14:37:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-11-18 14:37:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 14:37:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 14:37:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:37:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:37:30,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:37:30,099 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:37:30,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:37:30,597 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-18 14:37:30,598 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:37:30,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:37:30,612 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 14:37:30,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:30 BoogieIcfgContainer [2024-11-18 14:37:30,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:37:30,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:37:30,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:37:30,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:37:30,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:37:29" (1/3) ... [2024-11-18 14:37:30,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac70e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:30, skipping insertion in model container [2024-11-18 14:37:30,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:37:29" (2/3) ... [2024-11-18 14:37:30,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac70e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:37:30, skipping insertion in model container [2024-11-18 14:37:30,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:37:30" (3/3) ... [2024-11-18 14:37:30,619 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2024-11-18 14:37:30,632 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:37:30,633 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:37:30,690 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:37:30,697 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;@5f4ce6f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:37:30,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:37:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 133 states have (on average 1.586466165413534) internal successors, (211), 138 states have internal predecessors, (211), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 14:37:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 14:37:30,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:30,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:30,715 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:30,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2086312570, now seen corresponding path program 1 times [2024-11-18 14:37:30,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:30,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771554439] [2024-11-18 14:37:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:30,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:31,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771554439] [2024-11-18 14:37:31,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771554439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:31,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:31,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647618913] [2024-11-18 14:37:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:31,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:31,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:31,142 INFO L87 Difference]: Start difference. First operand has 178 states, 133 states have (on average 1.586466165413534) internal successors, (211), 138 states have internal predecessors, (211), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:31,224 INFO L93 Difference]: Finished difference Result 355 states and 608 transitions. [2024-11-18 14:37:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:31,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 14:37:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,247 INFO L225 Difference]: With dead ends: 355 [2024-11-18 14:37:31,247 INFO L226 Difference]: Without dead ends: 180 [2024-11-18 14:37:31,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:31,256 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 7 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:31,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 803 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:31,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-18 14:37:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-18 14:37:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 135 states have (on average 1.5555555555555556) internal successors, (210), 139 states have internal predecessors, (210), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 14:37:31,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 284 transitions. [2024-11-18 14:37:31,303 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 284 transitions. Word has length 15 [2024-11-18 14:37:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:31,304 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 284 transitions. [2024-11-18 14:37:31,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 284 transitions. [2024-11-18 14:37:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 14:37:31,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:31,306 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:31,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:37:31,306 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:31,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2089918424, now seen corresponding path program 1 times [2024-11-18 14:37:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964568316] [2024-11-18 14:37:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:31,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964568316] [2024-11-18 14:37:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964568316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:31,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:31,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:31,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136886877] [2024-11-18 14:37:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:31,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:31,380 INFO L87 Difference]: Start difference. First operand 180 states and 284 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:31,472 INFO L93 Difference]: Finished difference Result 373 states and 591 transitions. [2024-11-18 14:37:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:31,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 14:37:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,475 INFO L225 Difference]: With dead ends: 373 [2024-11-18 14:37:31,477 INFO L226 Difference]: Without dead ends: 196 [2024-11-18 14:37:31,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:31,479 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 25 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:31,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 819 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-18 14:37:31,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-18 14:37:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.5342465753424657) internal successors, (224), 150 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 300 transitions. [2024-11-18 14:37:31,497 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 300 transitions. Word has length 16 [2024-11-18 14:37:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:31,498 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 300 transitions. [2024-11-18 14:37:31,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:37:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 300 transitions. [2024-11-18 14:37:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:37:31,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:31,499 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:31,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:37:31,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:31,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2079657108, now seen corresponding path program 1 times [2024-11-18 14:37:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337475280] [2024-11-18 14:37:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:31,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337475280] [2024-11-18 14:37:31,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337475280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:31,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:31,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:37:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832180381] [2024-11-18 14:37:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:31,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:31,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:31,581 INFO L87 Difference]: Start difference. First operand 193 states and 300 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:31,600 INFO L93 Difference]: Finished difference Result 405 states and 637 transitions. [2024-11-18 14:37:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:31,601 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-18 14:37:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,603 INFO L225 Difference]: With dead ends: 405 [2024-11-18 14:37:31,603 INFO L226 Difference]: Without dead ends: 222 [2024-11-18 14:37:31,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:37:31,605 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 22 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 550 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 [2024-11-18 14:37:31,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 550 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-18 14:37:31,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 195. [2024-11-18 14:37:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.527027027027027) internal successors, (226), 152 states have internal predecessors, (226), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2024-11-18 14:37:31,617 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 24 [2024-11-18 14:37:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:31,618 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2024-11-18 14:37:31,618 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:37:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2024-11-18 14:37:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 14:37:31,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:31,619 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:31,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:37:31,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:31,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1546063421, now seen corresponding path program 1 times [2024-11-18 14:37:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035357829] [2024-11-18 14:37:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035357829] [2024-11-18 14:37:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035357829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:31,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:31,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385169321] [2024-11-18 14:37:31,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:31,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:31,762 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:31,800 INFO L93 Difference]: Finished difference Result 380 states and 593 transitions. [2024-11-18 14:37:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:31,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-18 14:37:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:31,804 INFO L225 Difference]: With dead ends: 380 [2024-11-18 14:37:31,804 INFO L226 Difference]: Without dead ends: 201 [2024-11-18 14:37:31,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:31,806 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:31,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1094 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-18 14:37:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-18 14:37:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 151 states have (on average 1.5165562913907285) internal successors, (229), 155 states have internal predecessors, (229), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2024-11-18 14:37:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 306 transitions. [2024-11-18 14:37:31,829 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 306 transitions. Word has length 32 [2024-11-18 14:37:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:31,830 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 306 transitions. [2024-11-18 14:37:31,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 306 transitions. [2024-11-18 14:37:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 14:37:31,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:31,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:31,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:37:31,831 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:31,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1069273240, now seen corresponding path program 1 times [2024-11-18 14:37:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:31,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045076556] [2024-11-18 14:37:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:31,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:31,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045076556] [2024-11-18 14:37:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045076556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:31,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:31,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:31,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045059114] [2024-11-18 14:37:31,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:31,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:31,965 INFO L87 Difference]: Start difference. First operand 199 states and 306 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:37:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:32,067 INFO L93 Difference]: Finished difference Result 343 states and 534 transitions. [2024-11-18 14:37:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-18 14:37:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:32,069 INFO L225 Difference]: With dead ends: 343 [2024-11-18 14:37:32,069 INFO L226 Difference]: Without dead ends: 195 [2024-11-18 14:37:32,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:32,070 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:32,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-18 14:37:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-18 14:37:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 148 states have (on average 1.4932432432432432) internal successors, (221), 152 states have internal predecessors, (221), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:37:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 297 transitions. [2024-11-18 14:37:32,089 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 297 transitions. Word has length 35 [2024-11-18 14:37:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:32,090 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 297 transitions. [2024-11-18 14:37:32,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:37:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 297 transitions. [2024-11-18 14:37:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 14:37:32,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:32,091 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:32,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:37:32,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:32,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -32659331, now seen corresponding path program 1 times [2024-11-18 14:37:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914104659] [2024-11-18 14:37:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914104659] [2024-11-18 14:37:32,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914104659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56317447] [2024-11-18 14:37:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:32,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:32,179 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) [2024-11-18 14:37:32,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:37:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:32,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:32,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:37:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56317447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:32,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 14:37:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376440529] [2024-11-18 14:37:32,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:32,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:32,363 INFO L87 Difference]: Start difference. First operand 195 states and 297 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:37:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:32,410 INFO L93 Difference]: Finished difference Result 438 states and 681 transitions. [2024-11-18 14:37:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:32,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-18 14:37:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:32,417 INFO L225 Difference]: With dead ends: 438 [2024-11-18 14:37:32,417 INFO L226 Difference]: Without dead ends: 254 [2024-11-18 14:37:32,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:32,421 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 94 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:32,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 804 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-18 14:37:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2024-11-18 14:37:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 191 states have (on average 1.4659685863874345) internal successors, (280), 195 states have internal predecessors, (280), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:37:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 376 transitions. [2024-11-18 14:37:32,441 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 376 transitions. Word has length 35 [2024-11-18 14:37:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:32,442 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 376 transitions. [2024-11-18 14:37:32,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:37:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 376 transitions. [2024-11-18 14:37:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:32,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:32,445 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:32,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:37:32,646 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,SelfDestructingSolverStorable5 [2024-11-18 14:37:32,648 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:32,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1003259933, now seen corresponding path program 2 times [2024-11-18 14:37:32,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781920347] [2024-11-18 14:37:32,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:37:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:32,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:37:32,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:37:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:37:32,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781920347] [2024-11-18 14:37:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781920347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:32,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150624221] [2024-11-18 14:37:32,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:32,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:32,709 INFO L87 Difference]: Start difference. First operand 248 states and 376 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:32,754 INFO L93 Difference]: Finished difference Result 465 states and 730 transitions. [2024-11-18 14:37:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-18 14:37:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:32,758 INFO L225 Difference]: With dead ends: 465 [2024-11-18 14:37:32,759 INFO L226 Difference]: Without dead ends: 246 [2024-11-18 14:37:32,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:32,760 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 7 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:32,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 756 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-18 14:37:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-18 14:37:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 190 states have (on average 1.4631578947368422) internal successors, (278), 194 states have internal predecessors, (278), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-18 14:37:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 372 transitions. [2024-11-18 14:37:32,779 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 372 transitions. Word has length 57 [2024-11-18 14:37:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:32,779 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 372 transitions. [2024-11-18 14:37:32,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 372 transitions. [2024-11-18 14:37:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 14:37:32,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:32,781 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:32,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:37:32,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:32,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -447415154, now seen corresponding path program 1 times [2024-11-18 14:37:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:32,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176524526] [2024-11-18 14:37:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-18 14:37:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176524526] [2024-11-18 14:37:32,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176524526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:32,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:32,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625461038] [2024-11-18 14:37:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:32,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:32,853 INFO L87 Difference]: Start difference. First operand 246 states and 372 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:32,888 INFO L93 Difference]: Finished difference Result 470 states and 728 transitions. [2024-11-18 14:37:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-18 14:37:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:32,890 INFO L225 Difference]: With dead ends: 470 [2024-11-18 14:37:32,890 INFO L226 Difference]: Without dead ends: 253 [2024-11-18 14:37:32,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:32,891 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 8 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:32,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 781 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-18 14:37:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-18 14:37:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 200 states have internal predecessors, (286), 47 states have call successors, (47), 9 states have call predecessors, (47), 9 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-18 14:37:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 380 transitions. [2024-11-18 14:37:32,908 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 380 transitions. Word has length 57 [2024-11-18 14:37:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:32,908 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 380 transitions. [2024-11-18 14:37:32,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 380 transitions. [2024-11-18 14:37:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 14:37:32,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:32,909 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:32,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:37:32,909 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:32,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:32,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1183107494, now seen corresponding path program 1 times [2024-11-18 14:37:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:32,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62182777] [2024-11-18 14:37:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:37:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62182777] [2024-11-18 14:37:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62182777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:33,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221117011] [2024-11-18 14:37:33,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:33,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:33,005 INFO L87 Difference]: Start difference. First operand 253 states and 380 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:33,096 INFO L93 Difference]: Finished difference Result 516 states and 786 transitions. [2024-11-18 14:37:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-18 14:37:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:33,099 INFO L225 Difference]: With dead ends: 516 [2024-11-18 14:37:33,099 INFO L226 Difference]: Without dead ends: 292 [2024-11-18 14:37:33,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:33,102 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 24 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:33,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 799 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-18 14:37:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 289. [2024-11-18 14:37:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 232 states have internal predecessors, (323), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 14:37:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 423 transitions. [2024-11-18 14:37:33,142 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 423 transitions. Word has length 58 [2024-11-18 14:37:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:33,142 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 423 transitions. [2024-11-18 14:37:33,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 14:37:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 423 transitions. [2024-11-18 14:37:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:37:33,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:33,143 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:33,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:37:33,143 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:33,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash -724330678, now seen corresponding path program 1 times [2024-11-18 14:37:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671262388] [2024-11-18 14:37:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:37:33,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671262388] [2024-11-18 14:37:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671262388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:33,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802001932] [2024-11-18 14:37:33,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:33,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:33,235 INFO L87 Difference]: Start difference. First operand 289 states and 423 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:33,262 INFO L93 Difference]: Finished difference Result 527 states and 785 transitions. [2024-11-18 14:37:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2024-11-18 14:37:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:33,266 INFO L225 Difference]: With dead ends: 527 [2024-11-18 14:37:33,266 INFO L226 Difference]: Without dead ends: 291 [2024-11-18 14:37:33,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:33,268 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:33,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1065 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-18 14:37:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2024-11-18 14:37:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 232 states have internal predecessors, (320), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 14:37:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 420 transitions. [2024-11-18 14:37:33,284 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 420 transitions. Word has length 76 [2024-11-18 14:37:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:33,284 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 420 transitions. [2024-11-18 14:37:33,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 420 transitions. [2024-11-18 14:37:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 14:37:33,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:33,285 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:33,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:37:33,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:33,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash -8134044, now seen corresponding path program 1 times [2024-11-18 14:37:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692002522] [2024-11-18 14:37:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-18 14:37:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692002522] [2024-11-18 14:37:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692002522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599460644] [2024-11-18 14:37:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:33,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:33,365 INFO L87 Difference]: Start difference. First operand 289 states and 420 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:33,401 INFO L93 Difference]: Finished difference Result 514 states and 769 transitions. [2024-11-18 14:37:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:33,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-11-18 14:37:33,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:33,404 INFO L225 Difference]: With dead ends: 514 [2024-11-18 14:37:33,404 INFO L226 Difference]: Without dead ends: 283 [2024-11-18 14:37:33,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:33,405 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:33,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 764 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-18 14:37:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-18 14:37:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 223 states have (on average 1.3811659192825112) internal successors, (308), 227 states have internal predecessors, (308), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 14:37:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 406 transitions. [2024-11-18 14:37:33,415 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 406 transitions. Word has length 105 [2024-11-18 14:37:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:33,416 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 406 transitions. [2024-11-18 14:37:33,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-18 14:37:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 406 transitions. [2024-11-18 14:37:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 14:37:33,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:33,418 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:33,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:37:33,419 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:33,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash -372253094, now seen corresponding path program 1 times [2024-11-18 14:37:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570986320] [2024-11-18 14:37:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-18 14:37:33,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570986320] [2024-11-18 14:37:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570986320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445039621] [2024-11-18 14:37:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:33,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:33,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:33,509 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) [2024-11-18 14:37:33,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:37:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:33,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:33,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-18 14:37:33,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:33,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445039621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:33,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:33,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:37:33,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512546467] [2024-11-18 14:37:33,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:33,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:33,685 INFO L87 Difference]: Start difference. First operand 283 states and 406 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:33,729 INFO L93 Difference]: Finished difference Result 511 states and 749 transitions. [2024-11-18 14:37:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2024-11-18 14:37:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:33,731 INFO L225 Difference]: With dead ends: 511 [2024-11-18 14:37:33,732 INFO L226 Difference]: Without dead ends: 266 [2024-11-18 14:37:33,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:33,733 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 35 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:33,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 720 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-18 14:37:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-18 14:37:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 209 states have (on average 1.3732057416267942) internal successors, (287), 213 states have internal predecessors, (287), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 379 transitions. [2024-11-18 14:37:33,743 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 379 transitions. Word has length 139 [2024-11-18 14:37:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:33,743 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 379 transitions. [2024-11-18 14:37:33,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 379 transitions. [2024-11-18 14:37:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:37:33,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:33,746 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:33,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:37:33,949 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,SelfDestructingSolverStorable11 [2024-11-18 14:37:33,950 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:33,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash 584624400, now seen corresponding path program 1 times [2024-11-18 14:37:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:33,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135058599] [2024-11-18 14:37:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-18 14:37:34,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:34,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135058599] [2024-11-18 14:37:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135058599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:34,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952271935] [2024-11-18 14:37:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:34,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:34,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:34,031 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) [2024-11-18 14:37:34,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:37:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:34,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:34,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-18 14:37:34,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:34,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952271935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:34,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:34,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:37:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191581910] [2024-11-18 14:37:34,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:34,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:34,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:34,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:34,186 INFO L87 Difference]: Start difference. First operand 266 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:34,230 INFO L93 Difference]: Finished difference Result 477 states and 695 transitions. [2024-11-18 14:37:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:34,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2024-11-18 14:37:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:34,232 INFO L225 Difference]: With dead ends: 477 [2024-11-18 14:37:34,232 INFO L226 Difference]: Without dead ends: 247 [2024-11-18 14:37:34,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:34,234 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 37 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:34,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 716 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:34,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-18 14:37:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2024-11-18 14:37:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 197 states have internal predecessors, (264), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 14:37:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 350 transitions. [2024-11-18 14:37:34,242 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 350 transitions. Word has length 143 [2024-11-18 14:37:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:34,242 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 350 transitions. [2024-11-18 14:37:34,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 350 transitions. [2024-11-18 14:37:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:37:34,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:34,243 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:34,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:37:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:34,445 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:34,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash -192670345, now seen corresponding path program 1 times [2024-11-18 14:37:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441763049] [2024-11-18 14:37:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:34,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-18 14:37:34,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:34,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441763049] [2024-11-18 14:37:34,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441763049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:34,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571302676] [2024-11-18 14:37:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:34,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:34,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:34,533 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) [2024-11-18 14:37:34,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:37:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:34,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:34,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-18 14:37:34,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:34,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571302676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:34,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:34,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:37:34,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909639367] [2024-11-18 14:37:34,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:34,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:34,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:34,689 INFO L87 Difference]: Start difference. First operand 247 states and 350 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:34,740 INFO L93 Difference]: Finished difference Result 468 states and 678 transitions. [2024-11-18 14:37:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:34,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2024-11-18 14:37:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:34,742 INFO L225 Difference]: With dead ends: 468 [2024-11-18 14:37:34,743 INFO L226 Difference]: Without dead ends: 279 [2024-11-18 14:37:34,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:34,744 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 33 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:34,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 729 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-18 14:37:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-11-18 14:37:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 221 states have (on average 1.3665158371040724) internal successors, (302), 225 states have internal predecessors, (302), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 394 transitions. [2024-11-18 14:37:34,752 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 394 transitions. Word has length 146 [2024-11-18 14:37:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:34,752 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 394 transitions. [2024-11-18 14:37:34,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:37:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 394 transitions. [2024-11-18 14:37:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:37:34,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:34,754 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:34,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:37:34,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:34,959 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:34,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 824171643, now seen corresponding path program 2 times [2024-11-18 14:37:34,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:34,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125778817] [2024-11-18 14:37:34,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:37:34,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:34,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:37:34,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:37:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-18 14:37:34,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:34,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125778817] [2024-11-18 14:37:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125778817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457406253] [2024-11-18 14:37:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:34,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:35,000 INFO L87 Difference]: Start difference. First operand 279 states and 394 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-18 14:37:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:35,027 INFO L93 Difference]: Finished difference Result 423 states and 613 transitions. [2024-11-18 14:37:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 146 [2024-11-18 14:37:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:35,029 INFO L225 Difference]: With dead ends: 423 [2024-11-18 14:37:35,029 INFO L226 Difference]: Without dead ends: 283 [2024-11-18 14:37:35,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:35,030 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 3 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:35,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 773 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-18 14:37:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-18 14:37:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 224 states have (on average 1.3616071428571428) internal successors, (305), 228 states have internal predecessors, (305), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 397 transitions. [2024-11-18 14:37:35,041 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 397 transitions. Word has length 146 [2024-11-18 14:37:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:35,041 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 397 transitions. [2024-11-18 14:37:35,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-18 14:37:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 397 transitions. [2024-11-18 14:37:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 14:37:35,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:35,043 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:35,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:37:35,043 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:35,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash -993005526, now seen corresponding path program 1 times [2024-11-18 14:37:35,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:35,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701406577] [2024-11-18 14:37:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-18 14:37:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701406577] [2024-11-18 14:37:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701406577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513896190] [2024-11-18 14:37:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:35,128 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) [2024-11-18 14:37:35,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:37:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:35,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-18 14:37:35,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:35,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513896190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:35,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 14:37:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261882201] [2024-11-18 14:37:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:35,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:35,313 INFO L87 Difference]: Start difference. First operand 283 states and 397 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:37:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:35,347 INFO L93 Difference]: Finished difference Result 432 states and 621 transitions. [2024-11-18 14:37:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 153 [2024-11-18 14:37:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:35,350 INFO L225 Difference]: With dead ends: 432 [2024-11-18 14:37:35,350 INFO L226 Difference]: Without dead ends: 288 [2024-11-18 14:37:35,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:35,352 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 4 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:35,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 775 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:35,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-18 14:37:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-18 14:37:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 228 states have (on average 1.355263157894737) internal successors, (309), 232 states have internal predecessors, (309), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 14:37:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 401 transitions. [2024-11-18 14:37:35,366 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 401 transitions. Word has length 153 [2024-11-18 14:37:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:35,367 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 401 transitions. [2024-11-18 14:37:35,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 14:37:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 401 transitions. [2024-11-18 14:37:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:37:35,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:35,369 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:35,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:37:35,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 14:37:35,574 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:35,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash 684000134, now seen corresponding path program 1 times [2024-11-18 14:37:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096815647] [2024-11-18 14:37:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-18 14:37:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096815647] [2024-11-18 14:37:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096815647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615368091] [2024-11-18 14:37:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:35,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:35,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:35,733 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) [2024-11-18 14:37:35,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:37:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:35,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:35,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-18 14:37:35,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:35,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615368091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:35,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:35,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 14:37:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260579416] [2024-11-18 14:37:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:35,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:35,918 INFO L87 Difference]: Start difference. First operand 288 states and 401 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 14:37:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:35,973 INFO L93 Difference]: Finished difference Result 436 states and 621 transitions. [2024-11-18 14:37:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:35,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 161 [2024-11-18 14:37:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:35,975 INFO L225 Difference]: With dead ends: 436 [2024-11-18 14:37:35,976 INFO L226 Difference]: Without dead ends: 287 [2024-11-18 14:37:35,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:35,977 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 5 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:35,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 765 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-18 14:37:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-18 14:37:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 228 states have (on average 1.3421052631578947) internal successors, (306), 231 states have internal predecessors, (306), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-18 14:37:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 396 transitions. [2024-11-18 14:37:35,986 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 396 transitions. Word has length 161 [2024-11-18 14:37:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:35,986 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 396 transitions. [2024-11-18 14:37:35,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 14:37:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 396 transitions. [2024-11-18 14:37:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 14:37:35,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:35,988 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:36,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:36,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:37:36,189 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:36,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1217979606, now seen corresponding path program 1 times [2024-11-18 14:37:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481898672] [2024-11-18 14:37:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-18 14:37:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481898672] [2024-11-18 14:37:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481898672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040271650] [2024-11-18 14:37:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:36,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:36,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:36,356 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) [2024-11-18 14:37:36,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:37:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:36,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:36,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 14:37:36,514 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040271650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:36,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:37:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468777071] [2024-11-18 14:37:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:36,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:36,516 INFO L87 Difference]: Start difference. First operand 287 states and 396 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 14:37:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:36,527 INFO L93 Difference]: Finished difference Result 434 states and 610 transitions. [2024-11-18 14:37:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 168 [2024-11-18 14:37:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:36,530 INFO L225 Difference]: With dead ends: 434 [2024-11-18 14:37:36,530 INFO L226 Difference]: Without dead ends: 286 [2024-11-18 14:37:36,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:36,531 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:36,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-18 14:37:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-18 14:37:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 228 states have (on average 1.337719298245614) internal successors, (305), 230 states have internal predecessors, (305), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 14:37:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 393 transitions. [2024-11-18 14:37:36,540 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 393 transitions. Word has length 168 [2024-11-18 14:37:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:36,541 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 393 transitions. [2024-11-18 14:37:36,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 14:37:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 393 transitions. [2024-11-18 14:37:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 14:37:36,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:36,543 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:36,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:36,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:36,744 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:36,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1838993589, now seen corresponding path program 1 times [2024-11-18 14:37:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885012585] [2024-11-18 14:37:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-18 14:37:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885012585] [2024-11-18 14:37:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885012585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209290033] [2024-11-18 14:37:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:36,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:36,865 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) [2024-11-18 14:37:36,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:37:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:37,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:37:37,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 14:37:37,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209290033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:37,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:37,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 14:37:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018878759] [2024-11-18 14:37:37,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:37,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:37,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:37,098 INFO L87 Difference]: Start difference. First operand 286 states and 393 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:37:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:37,178 INFO L93 Difference]: Finished difference Result 651 states and 901 transitions. [2024-11-18 14:37:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 171 [2024-11-18 14:37:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:37,184 INFO L225 Difference]: With dead ends: 651 [2024-11-18 14:37:37,184 INFO L226 Difference]: Without dead ends: 504 [2024-11-18 14:37:37,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:37,185 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 335 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:37,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 713 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-18 14:37:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-18 14:37:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.3638676844783715) internal successors, (536), 395 states have internal predecessors, (536), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 14:37:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 682 transitions. [2024-11-18 14:37:37,218 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 682 transitions. Word has length 171 [2024-11-18 14:37:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:37,218 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 682 transitions. [2024-11-18 14:37:37,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:37:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 682 transitions. [2024-11-18 14:37:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 14:37:37,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:37,221 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:37,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:37:37,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:37,427 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:37,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash -442638634, now seen corresponding path program 1 times [2024-11-18 14:37:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:37,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369496564] [2024-11-18 14:37:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:37:37,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:37,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369496564] [2024-11-18 14:37:37,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369496564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:37,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766450320] [2024-11-18 14:37:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:37,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:37,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:37,571 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) [2024-11-18 14:37:37,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:37:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:37,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:37,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-11-18 14:37:37,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766450320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 14:37:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90911880] [2024-11-18 14:37:37,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:37,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:37,789 INFO L87 Difference]: Start difference. First operand 498 states and 682 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:37,869 INFO L93 Difference]: Finished difference Result 794 states and 1106 transitions. [2024-11-18 14:37:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 202 [2024-11-18 14:37:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:37,873 INFO L225 Difference]: With dead ends: 794 [2024-11-18 14:37:37,873 INFO L226 Difference]: Without dead ends: 498 [2024-11-18 14:37:37,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:37,874 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 31 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:37,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 700 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-18 14:37:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2024-11-18 14:37:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.3486005089058524) internal successors, (530), 395 states have internal predecessors, (530), 73 states have call successors, (73), 31 states have call predecessors, (73), 31 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 14:37:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 676 transitions. [2024-11-18 14:37:37,891 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 676 transitions. Word has length 202 [2024-11-18 14:37:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:37,892 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 676 transitions. [2024-11-18 14:37:37,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 676 transitions. [2024-11-18 14:37:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 14:37:37,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:37,894 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:37,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:37:38,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:38,095 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:38,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1467251877, now seen corresponding path program 1 times [2024-11-18 14:37:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473582212] [2024-11-18 14:37:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:38,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:37:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473582212] [2024-11-18 14:37:38,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473582212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112071016] [2024-11-18 14:37:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:38,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:38,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:38,243 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) [2024-11-18 14:37:38,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:37:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:38,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:37:38,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-18 14:37:38,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112071016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:38,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:38,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 14:37:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978892184] [2024-11-18 14:37:38,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:38,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:38,446 INFO L87 Difference]: Start difference. First operand 498 states and 676 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:38,504 INFO L93 Difference]: Finished difference Result 794 states and 1092 transitions. [2024-11-18 14:37:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 203 [2024-11-18 14:37:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:38,507 INFO L225 Difference]: With dead ends: 794 [2024-11-18 14:37:38,507 INFO L226 Difference]: Without dead ends: 510 [2024-11-18 14:37:38,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:38,508 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:38,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 708 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-18 14:37:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2024-11-18 14:37:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 403 states have (on average 1.349875930521092) internal successors, (544), 405 states have internal predecessors, (544), 73 states have call successors, (73), 33 states have call predecessors, (73), 33 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-18 14:37:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 690 transitions. [2024-11-18 14:37:38,521 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 690 transitions. Word has length 203 [2024-11-18 14:37:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:38,522 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 690 transitions. [2024-11-18 14:37:38,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 690 transitions. [2024-11-18 14:37:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 14:37:38,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:38,523 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:38,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:37:38,724 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,SelfDestructingSolverStorable20 [2024-11-18 14:37:38,725 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:38,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash -645081104, now seen corresponding path program 1 times [2024-11-18 14:37:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:38,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127962610] [2024-11-18 14:37:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:37:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127962610] [2024-11-18 14:37:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127962610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673610860] [2024-11-18 14:37:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:38,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:38,824 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) [2024-11-18 14:37:38,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:37:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:39,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:37:39,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-18 14:37:39,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:39,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673610860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:39,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:39,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:37:39,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745697794] [2024-11-18 14:37:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:39,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:39,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:39,123 INFO L87 Difference]: Start difference. First operand 510 states and 690 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:37:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:39,166 INFO L93 Difference]: Finished difference Result 1112 states and 1526 transitions. [2024-11-18 14:37:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:39,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 204 [2024-11-18 14:37:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:39,173 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 14:37:39,173 INFO L226 Difference]: Without dead ends: 816 [2024-11-18 14:37:39,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:39,175 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 164 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:39,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 530 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-11-18 14:37:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 633. [2024-11-18 14:37:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 501 states have (on average 1.3532934131736527) internal successors, (678), 507 states have internal predecessors, (678), 88 states have call successors, (88), 43 states have call predecessors, (88), 43 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-18 14:37:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 854 transitions. [2024-11-18 14:37:39,206 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 854 transitions. Word has length 204 [2024-11-18 14:37:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:39,206 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 854 transitions. [2024-11-18 14:37:39,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:37:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 854 transitions. [2024-11-18 14:37:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 14:37:39,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:39,209 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:39,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:37:39,409 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,SelfDestructingSolverStorable21 [2024-11-18 14:37:39,410 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:39,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:39,411 INFO L85 PathProgramCache]: Analyzing trace with hash -306890892, now seen corresponding path program 1 times [2024-11-18 14:37:39,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:39,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092282280] [2024-11-18 14:37:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:37:39,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092282280] [2024-11-18 14:37:39,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092282280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899632740] [2024-11-18 14:37:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:39,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:39,521 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) [2024-11-18 14:37:39,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:37:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:39,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:37:39,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-18 14:37:39,730 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:39,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899632740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:39,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:39,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:37:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649265322] [2024-11-18 14:37:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:39,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:39,732 INFO L87 Difference]: Start difference. First operand 633 states and 854 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:37:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:39,806 INFO L93 Difference]: Finished difference Result 1395 states and 1902 transitions. [2024-11-18 14:37:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:39,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 205 [2024-11-18 14:37:39,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:39,813 INFO L225 Difference]: With dead ends: 1395 [2024-11-18 14:37:39,813 INFO L226 Difference]: Without dead ends: 1012 [2024-11-18 14:37:39,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:39,816 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 168 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:39,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-18 14:37:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2024-11-18 14:37:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 790 states have (on average 1.3658227848101265) internal successors, (1079), 804 states have internal predecessors, (1079), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 132 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-18 14:37:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1363 transitions. [2024-11-18 14:37:39,872 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1363 transitions. Word has length 205 [2024-11-18 14:37:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:39,872 INFO L471 AbstractCegarLoop]: Abstraction has 1004 states and 1363 transitions. [2024-11-18 14:37:39,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:37:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1363 transitions. [2024-11-18 14:37:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 14:37:39,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:39,875 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:39,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:37:40,076 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,SelfDestructingSolverStorable22 [2024-11-18 14:37:40,077 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:40,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1161156491, now seen corresponding path program 1 times [2024-11-18 14:37:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:40,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835063923] [2024-11-18 14:37:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:37:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835063923] [2024-11-18 14:37:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835063923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336719442] [2024-11-18 14:37:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:40,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:40,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:40,237 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) [2024-11-18 14:37:40,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:37:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:40,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:37:40,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-18 14:37:40,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336719442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:37:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489516460] [2024-11-18 14:37:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:40,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:37:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:37:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:40,411 INFO L87 Difference]: Start difference. First operand 1004 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:40,462 INFO L93 Difference]: Finished difference Result 2340 states and 3213 transitions. [2024-11-18 14:37:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:37:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2024-11-18 14:37:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:40,468 INFO L225 Difference]: With dead ends: 2340 [2024-11-18 14:37:40,469 INFO L226 Difference]: Without dead ends: 1632 [2024-11-18 14:37:40,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:40,471 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 175 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:40,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 563 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-18 14:37:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1618. [2024-11-18 14:37:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1268 states have (on average 1.3809148264984228) internal successors, (1751), 1296 states have internal predecessors, (1751), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2024-11-18 14:37:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2219 transitions. [2024-11-18 14:37:40,549 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2219 transitions. Word has length 206 [2024-11-18 14:37:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:40,550 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2219 transitions. [2024-11-18 14:37:40,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2219 transitions. [2024-11-18 14:37:40,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 14:37:40,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:40,553 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:40,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:37:40,753 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,SelfDestructingSolverStorable23 [2024-11-18 14:37:40,754 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:40,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash 131797193, now seen corresponding path program 1 times [2024-11-18 14:37:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786953988] [2024-11-18 14:37:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:37:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786953988] [2024-11-18 14:37:40,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786953988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:40,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748974094] [2024-11-18 14:37:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:40,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:40,850 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) [2024-11-18 14:37:40,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:37:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:41,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:37:41,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 14:37:41,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748974094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-18 14:37:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028484610] [2024-11-18 14:37:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:41,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:41,025 INFO L87 Difference]: Start difference. First operand 1618 states and 2219 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:41,075 INFO L93 Difference]: Finished difference Result 3079 states and 4237 transitions. [2024-11-18 14:37:41,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:41,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 206 [2024-11-18 14:37:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:41,081 INFO L225 Difference]: With dead ends: 3079 [2024-11-18 14:37:41,082 INFO L226 Difference]: Without dead ends: 1620 [2024-11-18 14:37:41,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:37:41,084 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:41,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1019 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2024-11-18 14:37:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1618. [2024-11-18 14:37:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1268 states have (on average 1.3761829652996846) internal successors, (1745), 1296 states have internal predecessors, (1745), 234 states have call successors, (234), 115 states have call predecessors, (234), 115 states have return successors, (234), 214 states have call predecessors, (234), 234 states have call successors, (234) [2024-11-18 14:37:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2213 transitions. [2024-11-18 14:37:41,171 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2213 transitions. Word has length 206 [2024-11-18 14:37:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:41,172 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2213 transitions. [2024-11-18 14:37:41,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2213 transitions. [2024-11-18 14:37:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-18 14:37:41,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:41,176 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:41,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:37:41,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:41,377 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:41,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 892208440, now seen corresponding path program 1 times [2024-11-18 14:37:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321875565] [2024-11-18 14:37:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-18 14:37:41,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321875565] [2024-11-18 14:37:41,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321875565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:41,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453482444] [2024-11-18 14:37:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:41,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:41,477 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) [2024-11-18 14:37:41,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:37:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:41,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:41,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-18 14:37:41,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-18 14:37:41,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453482444] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:41,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:37:41,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-18 14:37:41,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54846153] [2024-11-18 14:37:41,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:41,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:41,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:41,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:41,769 INFO L87 Difference]: Start difference. First operand 1618 states and 2213 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:37:41,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:41,830 INFO L93 Difference]: Finished difference Result 3101 states and 4261 transitions. [2024-11-18 14:37:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:37:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 213 [2024-11-18 14:37:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:41,839 INFO L225 Difference]: With dead ends: 3101 [2024-11-18 14:37:41,840 INFO L226 Difference]: Without dead ends: 1609 [2024-11-18 14:37:41,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:41,844 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 35 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:41,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-18 14:37:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-18 14:37:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1262 states have (on average 1.3708399366085577) internal successors, (1730), 1290 states have internal predecessors, (1730), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:37:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2192 transitions. [2024-11-18 14:37:41,954 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2192 transitions. Word has length 213 [2024-11-18 14:37:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:41,955 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2192 transitions. [2024-11-18 14:37:41,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:37:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2192 transitions. [2024-11-18 14:37:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 14:37:41,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:41,958 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:41,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:37:42,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 14:37:42,159 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:42,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1903852821, now seen corresponding path program 1 times [2024-11-18 14:37:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994834083] [2024-11-18 14:37:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-18 14:37:42,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:42,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994834083] [2024-11-18 14:37:42,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994834083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:42,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038372803] [2024-11-18 14:37:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:42,265 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:42,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:37:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:42,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:37:42,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-18 14:37:42,437 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038372803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:42,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-18 14:37:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138022652] [2024-11-18 14:37:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:42,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:42,439 INFO L87 Difference]: Start difference. First operand 1609 states and 2192 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:42,482 INFO L93 Difference]: Finished difference Result 3109 states and 4254 transitions. [2024-11-18 14:37:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 237 [2024-11-18 14:37:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:42,490 INFO L225 Difference]: With dead ends: 3109 [2024-11-18 14:37:42,492 INFO L226 Difference]: Without dead ends: 1609 [2024-11-18 14:37:42,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:42,496 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:42,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1016 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-18 14:37:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2024-11-18 14:37:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1262 states have (on average 1.3684627575277337) internal successors, (1727), 1290 states have internal predecessors, (1727), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:37:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2189 transitions. [2024-11-18 14:37:42,581 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2189 transitions. Word has length 237 [2024-11-18 14:37:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:42,582 INFO L471 AbstractCegarLoop]: Abstraction has 1609 states and 2189 transitions. [2024-11-18 14:37:42,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:37:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2189 transitions. [2024-11-18 14:37:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 14:37:42,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:42,584 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:42,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:37:42,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 14:37:42,785 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 875536937, now seen corresponding path program 1 times [2024-11-18 14:37:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954065183] [2024-11-18 14:37:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 83 proven. 73 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-18 14:37:42,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954065183] [2024-11-18 14:37:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954065183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365183567] [2024-11-18 14:37:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:42,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:42,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:42,916 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:42,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:37:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:43,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:43,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 260 proven. 9 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-18 14:37:43,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-18 14:37:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365183567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:43,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-18 14:37:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227055283] [2024-11-18 14:37:43,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:43,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:43,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:43,316 INFO L87 Difference]: Start difference. First operand 1609 states and 2189 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 14:37:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:43,386 INFO L93 Difference]: Finished difference Result 3147 states and 4297 transitions. [2024-11-18 14:37:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:43,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 243 [2024-11-18 14:37:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:43,393 INFO L225 Difference]: With dead ends: 3147 [2024-11-18 14:37:43,393 INFO L226 Difference]: Without dead ends: 1606 [2024-11-18 14:37:43,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:43,396 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 32 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:43,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 912 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-18 14:37:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-11-18 14:37:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1259 states have (on average 1.3669579030976966) internal successors, (1721), 1287 states have internal predecessors, (1721), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-18 14:37:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2183 transitions. [2024-11-18 14:37:43,442 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2183 transitions. Word has length 243 [2024-11-18 14:37:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:43,442 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2183 transitions. [2024-11-18 14:37:43,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 14:37:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2183 transitions. [2024-11-18 14:37:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 14:37:43,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:43,444 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:43,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 14:37:43,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-18 14:37:43,644 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:43,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1189094123, now seen corresponding path program 1 times [2024-11-18 14:37:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057605278] [2024-11-18 14:37:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-18 14:37:43,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:43,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057605278] [2024-11-18 14:37:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057605278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:43,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646452995] [2024-11-18 14:37:43,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:43,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:43,994 INFO L87 Difference]: Start difference. First operand 1606 states and 2183 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:37:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:44,081 INFO L93 Difference]: Finished difference Result 2444 states and 3546 transitions. [2024-11-18 14:37:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:37:44,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 270 [2024-11-18 14:37:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:44,090 INFO L225 Difference]: With dead ends: 2444 [2024-11-18 14:37:44,090 INFO L226 Difference]: Without dead ends: 2442 [2024-11-18 14:37:44,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:37:44,094 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 116 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:44,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1832 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-11-18 14:37:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1654. [2024-11-18 14:37:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1291 states have (on average 1.3578621223857474) internal successors, (1753), 1327 states have internal predecessors, (1753), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-18 14:37:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2231 transitions. [2024-11-18 14:37:44,162 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2231 transitions. Word has length 270 [2024-11-18 14:37:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:44,163 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2231 transitions. [2024-11-18 14:37:44,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:37:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2231 transitions. [2024-11-18 14:37:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-18 14:37:44,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:44,165 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:44,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 14:37:44,165 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:44,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1337818136, now seen corresponding path program 1 times [2024-11-18 14:37:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673460358] [2024-11-18 14:37:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:37:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673460358] [2024-11-18 14:37:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673460358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545960190] [2024-11-18 14:37:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:44,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:44,563 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:44,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:37:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:44,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:37:44,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-18 14:37:44,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:37:45,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545960190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:45,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:45,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-18 14:37:45,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165742659] [2024-11-18 14:37:45,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:45,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:37:45,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:37:45,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:37:45,207 INFO L87 Difference]: Start difference. First operand 1654 states and 2231 transitions. Second operand has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-18 14:37:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:45,673 INFO L93 Difference]: Finished difference Result 4058 states and 5664 transitions. [2024-11-18 14:37:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:37:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 278 [2024-11-18 14:37:45,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:45,686 INFO L225 Difference]: With dead ends: 4058 [2024-11-18 14:37:45,686 INFO L226 Difference]: Without dead ends: 2708 [2024-11-18 14:37:45,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 547 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:37:45,692 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 337 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:45,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 3491 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:37:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-18 14:37:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2480. [2024-11-18 14:37:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 1934 states have (on average 1.3536711478800414) internal successors, (2618), 1986 states have internal predecessors, (2618), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2024-11-18 14:37:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3338 transitions. [2024-11-18 14:37:45,813 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3338 transitions. Word has length 278 [2024-11-18 14:37:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:45,813 INFO L471 AbstractCegarLoop]: Abstraction has 2480 states and 3338 transitions. [2024-11-18 14:37:45,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.333333333333334) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2024-11-18 14:37:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3338 transitions. [2024-11-18 14:37:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-18 14:37:45,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:45,816 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:45,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:46,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:46,018 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:46,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1995535143, now seen corresponding path program 1 times [2024-11-18 14:37:46,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:46,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591402508] [2024-11-18 14:37:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:46,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-18 14:37:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591402508] [2024-11-18 14:37:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591402508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437395838] [2024-11-18 14:37:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:46,148 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:46,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 14:37:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:46,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:46,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-11-18 14:37:46,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437395838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:46,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:46,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:37:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187024360] [2024-11-18 14:37:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:46,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:46,406 INFO L87 Difference]: Start difference. First operand 2480 states and 3338 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:37:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:46,584 INFO L93 Difference]: Finished difference Result 4793 states and 6552 transitions. [2024-11-18 14:37:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 278 [2024-11-18 14:37:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:46,597 INFO L225 Difference]: With dead ends: 4793 [2024-11-18 14:37:46,597 INFO L226 Difference]: Without dead ends: 2416 [2024-11-18 14:37:46,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:46,603 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 4 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:46,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 699 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:37:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-18 14:37:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2024-11-18 14:37:46,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1890 states have (on average 1.3375661375661376) internal successors, (2528), 1942 states have internal predecessors, (2528), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2024-11-18 14:37:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3212 transitions. [2024-11-18 14:37:46,715 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3212 transitions. Word has length 278 [2024-11-18 14:37:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:46,716 INFO L471 AbstractCegarLoop]: Abstraction has 2416 states and 3212 transitions. [2024-11-18 14:37:46,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:37:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3212 transitions. [2024-11-18 14:37:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-18 14:37:46,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:46,719 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:46,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:46,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:46,920 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:46,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1834324692, now seen corresponding path program 1 times [2024-11-18 14:37:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968138754] [2024-11-18 14:37:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-11-18 14:37:47,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968138754] [2024-11-18 14:37:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968138754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026847338] [2024-11-18 14:37:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:47,039 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:47,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 14:37:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:47,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:37:47,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-11-18 14:37:47,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026847338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:47,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:47,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:37:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521873777] [2024-11-18 14:37:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:47,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:47,253 INFO L87 Difference]: Start difference. First operand 2416 states and 3212 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:37:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:47,364 INFO L93 Difference]: Finished difference Result 4551 states and 6145 transitions. [2024-11-18 14:37:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 281 [2024-11-18 14:37:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:47,377 INFO L225 Difference]: With dead ends: 4551 [2024-11-18 14:37:47,377 INFO L226 Difference]: Without dead ends: 2220 [2024-11-18 14:37:47,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:47,386 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 4 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:47,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 727 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2024-11-18 14:37:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2220. [2024-11-18 14:37:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1724 states have (on average 1.324245939675174) internal successors, (2283), 1776 states have internal predecessors, (2283), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2024-11-18 14:37:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2929 transitions. [2024-11-18 14:37:47,465 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2929 transitions. Word has length 281 [2024-11-18 14:37:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:47,465 INFO L471 AbstractCegarLoop]: Abstraction has 2220 states and 2929 transitions. [2024-11-18 14:37:47,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:37:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2929 transitions. [2024-11-18 14:37:47,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-18 14:37:47,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:47,468 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:47,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-18 14:37:47,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-18 14:37:47,671 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:47,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1939290951, now seen corresponding path program 1 times [2024-11-18 14:37:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202619932] [2024-11-18 14:37:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-11-18 14:37:47,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:47,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202619932] [2024-11-18 14:37:47,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202619932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:47,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560475633] [2024-11-18 14:37:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:47,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:47,986 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:47,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 14:37:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:48,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 14:37:48,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-18 14:37:48,280 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:48,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560475633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:48,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:48,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-18 14:37:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765974297] [2024-11-18 14:37:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:48,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:37:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:37:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:37:48,282 INFO L87 Difference]: Start difference. First operand 2220 states and 2929 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:37:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:48,624 INFO L93 Difference]: Finished difference Result 5562 states and 7317 transitions. [2024-11-18 14:37:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 293 [2024-11-18 14:37:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:48,648 INFO L225 Difference]: With dead ends: 5562 [2024-11-18 14:37:48,649 INFO L226 Difference]: Without dead ends: 3948 [2024-11-18 14:37:48,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:37:48,655 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 128 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:48,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1693 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2024-11-18 14:37:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3934. [2024-11-18 14:37:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3034 states have (on average 1.3098220171390904) internal successors, (3974), 3134 states have internal predecessors, (3974), 583 states have call successors, (583), 316 states have call predecessors, (583), 316 states have return successors, (583), 491 states have call predecessors, (583), 583 states have call successors, (583) [2024-11-18 14:37:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 5140 transitions. [2024-11-18 14:37:48,813 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 5140 transitions. Word has length 293 [2024-11-18 14:37:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:48,814 INFO L471 AbstractCegarLoop]: Abstraction has 3934 states and 5140 transitions. [2024-11-18 14:37:48,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:37:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 5140 transitions. [2024-11-18 14:37:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-18 14:37:48,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:48,817 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:48,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 14:37:49,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-18 14:37:49,018 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:49,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash 163156564, now seen corresponding path program 1 times [2024-11-18 14:37:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:49,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823642060] [2024-11-18 14:37:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:49,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 14:37:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823642060] [2024-11-18 14:37:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823642060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858600833] [2024-11-18 14:37:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:49,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:49,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:49,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:49,247 INFO L87 Difference]: Start difference. First operand 3934 states and 5140 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:37:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:49,433 INFO L93 Difference]: Finished difference Result 8956 states and 11648 transitions. [2024-11-18 14:37:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 295 [2024-11-18 14:37:49,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:49,453 INFO L225 Difference]: With dead ends: 8956 [2024-11-18 14:37:49,454 INFO L226 Difference]: Without dead ends: 5306 [2024-11-18 14:37:49,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:49,464 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 319 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:49,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 731 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2024-11-18 14:37:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4594. [2024-11-18 14:37:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4594 states, 3523 states have (on average 1.2963383479988646) internal successors, (4567), 3635 states have internal predecessors, (4567), 687 states have call successors, (687), 383 states have call predecessors, (687), 383 states have return successors, (687), 583 states have call predecessors, (687), 687 states have call successors, (687) [2024-11-18 14:37:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 5941 transitions. [2024-11-18 14:37:49,748 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 5941 transitions. Word has length 295 [2024-11-18 14:37:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:49,749 INFO L471 AbstractCegarLoop]: Abstraction has 4594 states and 5941 transitions. [2024-11-18 14:37:49,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:37:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 5941 transitions. [2024-11-18 14:37:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-18 14:37:49,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:49,752 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:49,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-18 14:37:49,752 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:49,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1839544214, now seen corresponding path program 1 times [2024-11-18 14:37:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:49,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119415413] [2024-11-18 14:37:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2024-11-18 14:37:49,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119415413] [2024-11-18 14:37:49,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119415413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:49,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:49,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:37:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871343776] [2024-11-18 14:37:49,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:49,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:37:49,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:49,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:37:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:49,944 INFO L87 Difference]: Start difference. First operand 4594 states and 5941 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:37:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:50,127 INFO L93 Difference]: Finished difference Result 9186 states and 12149 transitions. [2024-11-18 14:37:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:37:50,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 299 [2024-11-18 14:37:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:50,154 INFO L225 Difference]: With dead ends: 9186 [2024-11-18 14:37:50,154 INFO L226 Difference]: Without dead ends: 5098 [2024-11-18 14:37:50,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:37:50,167 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 32 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:50,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1022 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2024-11-18 14:37:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 4990. [2024-11-18 14:37:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 3847 states have (on average 1.3108916038471536) internal successors, (5043), 3959 states have internal predecessors, (5043), 759 states have call successors, (759), 383 states have call predecessors, (759), 383 states have return successors, (759), 655 states have call predecessors, (759), 759 states have call successors, (759) [2024-11-18 14:37:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 6561 transitions. [2024-11-18 14:37:50,381 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 6561 transitions. Word has length 299 [2024-11-18 14:37:50,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:50,382 INFO L471 AbstractCegarLoop]: Abstraction has 4990 states and 6561 transitions. [2024-11-18 14:37:50,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-18 14:37:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 6561 transitions. [2024-11-18 14:37:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-18 14:37:50,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:50,385 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:50,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-18 14:37:50,385 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:50,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 9129234, now seen corresponding path program 1 times [2024-11-18 14:37:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091209369] [2024-11-18 14:37:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2024-11-18 14:37:50,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091209369] [2024-11-18 14:37:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091209369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:37:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313507003] [2024-11-18 14:37:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:50,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:37:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:37:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:50,725 INFO L87 Difference]: Start difference. First operand 4990 states and 6561 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:37:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:50,902 INFO L93 Difference]: Finished difference Result 9319 states and 12307 transitions. [2024-11-18 14:37:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:50,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 299 [2024-11-18 14:37:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:50,916 INFO L225 Difference]: With dead ends: 9319 [2024-11-18 14:37:50,916 INFO L226 Difference]: Without dead ends: 4912 [2024-11-18 14:37:50,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:50,922 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:50,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 969 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:37:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2024-11-18 14:37:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4912. [2024-11-18 14:37:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 3782 states have (on average 1.3088313061872026) internal successors, (4950), 3887 states have internal predecessors, (4950), 753 states have call successors, (753), 377 states have call predecessors, (753), 376 states have return successors, (752), 654 states have call predecessors, (752), 752 states have call successors, (752) [2024-11-18 14:37:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 6455 transitions. [2024-11-18 14:37:51,082 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 6455 transitions. Word has length 299 [2024-11-18 14:37:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:51,082 INFO L471 AbstractCegarLoop]: Abstraction has 4912 states and 6455 transitions. [2024-11-18 14:37:51,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:37:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 6455 transitions. [2024-11-18 14:37:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 14:37:51,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:51,085 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:51,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-18 14:37:51,085 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:51,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash -788096576, now seen corresponding path program 1 times [2024-11-18 14:37:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380431126] [2024-11-18 14:37:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-18 14:37:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380431126] [2024-11-18 14:37:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380431126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189049464] [2024-11-18 14:37:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:51,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:51,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:51,454 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:51,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 14:37:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:51,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 14:37:51,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-18 14:37:51,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-18 14:37:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189049464] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:51,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:37:51,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 10] total 17 [2024-11-18 14:37:51,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134790009] [2024-11-18 14:37:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:51,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:37:51,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:37:51,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:37:51,947 INFO L87 Difference]: Start difference. First operand 4912 states and 6455 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-18 14:37:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:52,992 INFO L93 Difference]: Finished difference Result 14958 states and 19509 transitions. [2024-11-18 14:37:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 14:37:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 304 [2024-11-18 14:37:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:53,027 INFO L225 Difference]: With dead ends: 14958 [2024-11-18 14:37:53,027 INFO L226 Difference]: Without dead ends: 10566 [2024-11-18 14:37:53,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:37:53,039 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 667 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:53,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2735 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:37:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2024-11-18 14:37:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 6766. [2024-11-18 14:37:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6766 states, 5182 states have (on average 1.306445387881127) internal successors, (6770), 5332 states have internal predecessors, (6770), 1066 states have call successors, (1066), 518 states have call predecessors, (1066), 517 states have return successors, (1065), 922 states have call predecessors, (1065), 1065 states have call successors, (1065) [2024-11-18 14:37:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 8901 transitions. [2024-11-18 14:37:53,467 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 8901 transitions. Word has length 304 [2024-11-18 14:37:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:53,467 INFO L471 AbstractCegarLoop]: Abstraction has 6766 states and 8901 transitions. [2024-11-18 14:37:53,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-18 14:37:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 8901 transitions. [2024-11-18 14:37:53,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 14:37:53,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:53,472 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:53,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 14:37:53,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 14:37:53,677 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:53,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash -112763456, now seen corresponding path program 1 times [2024-11-18 14:37:53,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10719942] [2024-11-18 14:37:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-18 14:37:54,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10719942] [2024-11-18 14:37:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10719942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182510544] [2024-11-18 14:37:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:54,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:54,522 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:54,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 14:37:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:54,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 14:37:54,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-11-18 14:37:54,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:37:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182510544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:54,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:37:54,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 12 [2024-11-18 14:37:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923785704] [2024-11-18 14:37:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:54,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:37:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:37:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:37:54,771 INFO L87 Difference]: Start difference. First operand 6766 states and 8901 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-18 14:37:55,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:55,266 INFO L93 Difference]: Finished difference Result 13102 states and 17221 transitions. [2024-11-18 14:37:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:37:55,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 304 [2024-11-18 14:37:55,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:55,293 INFO L225 Difference]: With dead ends: 13102 [2024-11-18 14:37:55,294 INFO L226 Difference]: Without dead ends: 6808 [2024-11-18 14:37:55,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:37:55,307 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 122 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:55,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1709 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6808 states. [2024-11-18 14:37:55,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6808 to 6566. [2024-11-18 14:37:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 5030 states have (on average 1.2982107355864811) internal successors, (6530), 5176 states have internal predecessors, (6530), 1022 states have call successors, (1022), 514 states have call predecessors, (1022), 513 states have return successors, (1021), 882 states have call predecessors, (1021), 1021 states have call successors, (1021) [2024-11-18 14:37:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 8573 transitions. [2024-11-18 14:37:55,544 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 8573 transitions. Word has length 304 [2024-11-18 14:37:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:55,544 INFO L471 AbstractCegarLoop]: Abstraction has 6566 states and 8573 transitions. [2024-11-18 14:37:55,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-18 14:37:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 8573 transitions. [2024-11-18 14:37:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-18 14:37:55,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:55,547 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:55,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-18 14:37:55,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:55,752 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:55,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -446467712, now seen corresponding path program 1 times [2024-11-18 14:37:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:55,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902785438] [2024-11-18 14:37:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:55,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-18 14:37:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902785438] [2024-11-18 14:37:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902785438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:37:55,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:37:55,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:37:55,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22441533] [2024-11-18 14:37:55,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:37:55,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:37:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:55,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:37:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:37:55,879 INFO L87 Difference]: Start difference. First operand 6566 states and 8573 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 14:37:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:37:56,455 INFO L93 Difference]: Finished difference Result 11928 states and 15607 transitions. [2024-11-18 14:37:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:37:56,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 311 [2024-11-18 14:37:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:37:56,476 INFO L225 Difference]: With dead ends: 11928 [2024-11-18 14:37:56,476 INFO L226 Difference]: Without dead ends: 6130 [2024-11-18 14:37:56,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:37:56,484 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 432 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:37:56,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 886 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:37:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2024-11-18 14:37:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 5876. [2024-11-18 14:37:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4509 states have (on average 1.2789975604346862) internal successors, (5767), 4633 states have internal predecessors, (5767), 907 states have call successors, (907), 459 states have call predecessors, (907), 459 states have return successors, (907), 783 states have call predecessors, (907), 907 states have call successors, (907) [2024-11-18 14:37:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7581 transitions. [2024-11-18 14:37:56,738 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7581 transitions. Word has length 311 [2024-11-18 14:37:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:37:56,739 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 7581 transitions. [2024-11-18 14:37:56,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 14:37:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7581 transitions. [2024-11-18 14:37:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-18 14:37:56,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:37:56,749 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:37:56,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-18 14:37:56,749 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:37:56,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:37:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash -409137599, now seen corresponding path program 1 times [2024-11-18 14:37:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:37:56,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141337956] [2024-11-18 14:37:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:37:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-18 14:37:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:37:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141337956] [2024-11-18 14:37:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141337956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:37:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039266754] [2024-11-18 14:37:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:37:58,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:37:58,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:37:58,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:37:58,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 14:37:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:37:58,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 14:37:58,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:37:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 211 proven. 122 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2024-11-18 14:37:59,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:37:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-18 14:37:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039266754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:37:59,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:37:59,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 34 [2024-11-18 14:37:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105469695] [2024-11-18 14:37:59,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:37:59,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 14:37:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:37:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 14:37:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 14:37:59,943 INFO L87 Difference]: Start difference. First operand 5876 states and 7581 transitions. Second operand has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) [2024-11-18 14:38:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:14,040 INFO L93 Difference]: Finished difference Result 45065 states and 61620 transitions. [2024-11-18 14:38:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-18 14:38:14,040 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) Word has length 359 [2024-11-18 14:38:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:14,144 INFO L225 Difference]: With dead ends: 45065 [2024-11-18 14:38:14,144 INFO L226 Difference]: Without dead ends: 39965 [2024-11-18 14:38:14,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 736 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41229 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7076, Invalid=88714, Unknown=0, NotChecked=0, Total=95790 [2024-11-18 14:38:14,173 INFO L432 NwaCegarLoop]: 959 mSDtfsCounter, 6343 mSDsluCounter, 15819 mSDsCounter, 0 mSdLazyCounter, 9773 mSolverCounterSat, 1897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 16778 SdHoareTripleChecker+Invalid, 11670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 9773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:14,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 16778 Invalid, 11670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1897 Valid, 9773 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-18 14:38:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39965 states. [2024-11-18 14:38:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39965 to 7664. [2024-11-18 14:38:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7664 states, 5912 states have (on average 1.2640392422192153) internal successors, (7473), 6158 states have internal predecessors, (7473), 1138 states have call successors, (1138), 613 states have call predecessors, (1138), 613 states have return successors, (1138), 892 states have call predecessors, (1138), 1138 states have call successors, (1138) [2024-11-18 14:38:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7664 states to 7664 states and 9749 transitions. [2024-11-18 14:38:15,215 INFO L78 Accepts]: Start accepts. Automaton has 7664 states and 9749 transitions. Word has length 359 [2024-11-18 14:38:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:15,216 INFO L471 AbstractCegarLoop]: Abstraction has 7664 states and 9749 transitions. [2024-11-18 14:38:15,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 8.363636363636363) internal successors, (276), 31 states have internal predecessors, (276), 16 states have call successors, (62), 8 states have call predecessors, (62), 10 states have return successors, (61), 17 states have call predecessors, (61), 15 states have call successors, (61) [2024-11-18 14:38:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7664 states and 9749 transitions. [2024-11-18 14:38:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 14:38:15,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:15,224 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:15,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:15,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-18 14:38:15,427 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:15,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:15,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1100506943, now seen corresponding path program 1 times [2024-11-18 14:38:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:15,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650425904] [2024-11-18 14:38:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-18 14:38:16,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650425904] [2024-11-18 14:38:16,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650425904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76292378] [2024-11-18 14:38:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:16,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:16,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:16,405 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:16,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 14:38:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:16,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 14:38:16,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 211 proven. 120 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-18 14:38:17,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2024-11-18 14:38:18,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76292378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:18,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:18,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 18] total 39 [2024-11-18 14:38:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263471288] [2024-11-18 14:38:18,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:18,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 14:38:18,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 14:38:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 14:38:18,053 INFO L87 Difference]: Start difference. First operand 7664 states and 9749 transitions. Second operand has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) [2024-11-18 14:38:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:38:41,976 INFO L93 Difference]: Finished difference Result 63278 states and 85642 transitions. [2024-11-18 14:38:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2024-11-18 14:38:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) Word has length 360 [2024-11-18 14:38:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:38:42,230 INFO L225 Difference]: With dead ends: 63278 [2024-11-18 14:38:42,231 INFO L226 Difference]: Without dead ends: 56498 [2024-11-18 14:38:42,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46124 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=9348, Invalid=97254, Unknown=0, NotChecked=0, Total=106602 [2024-11-18 14:38:42,284 INFO L432 NwaCegarLoop]: 993 mSDtfsCounter, 8030 mSDsluCounter, 18247 mSDsCounter, 0 mSdLazyCounter, 12168 mSolverCounterSat, 2532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 19240 SdHoareTripleChecker+Invalid, 14700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2532 IncrementalHoareTripleChecker+Valid, 12168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:38:42,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 19240 Invalid, 14700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2532 Valid, 12168 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-18 14:38:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56498 states. [2024-11-18 14:38:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56498 to 8690. [2024-11-18 14:38:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8690 states, 6798 states have (on average 1.2655192703736393) internal successors, (8603), 7114 states have internal predecessors, (8603), 1215 states have call successors, (1215), 676 states have call predecessors, (1215), 676 states have return successors, (1215), 899 states have call predecessors, (1215), 1215 states have call successors, (1215) [2024-11-18 14:38:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8690 states to 8690 states and 11033 transitions. [2024-11-18 14:38:44,495 INFO L78 Accepts]: Start accepts. Automaton has 8690 states and 11033 transitions. Word has length 360 [2024-11-18 14:38:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:38:44,496 INFO L471 AbstractCegarLoop]: Abstraction has 8690 states and 11033 transitions. [2024-11-18 14:38:44,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 8.157894736842104) internal successors, (310), 36 states have internal predecessors, (310), 20 states have call successors, (74), 8 states have call predecessors, (74), 10 states have return successors, (73), 21 states have call predecessors, (73), 19 states have call successors, (73) [2024-11-18 14:38:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8690 states and 11033 transitions. [2024-11-18 14:38:44,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-18 14:38:44,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:38:44,507 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:38:44,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 14:38:44,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-18 14:38:44,709 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:38:44,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:38:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 378930454, now seen corresponding path program 1 times [2024-11-18 14:38:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:38:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350835414] [2024-11-18 14:38:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:38:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2024-11-18 14:38:45,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:38:45,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350835414] [2024-11-18 14:38:45,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350835414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:38:45,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067225935] [2024-11-18 14:38:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:38:45,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:38:45,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:38:45,981 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:38:45,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 14:38:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:38:46,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 14:38:46,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:38:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 206 proven. 121 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-11-18 14:38:46,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:38:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-11-18 14:38:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067225935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:38:47,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:38:47,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 16] total 39 [2024-11-18 14:38:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476420027] [2024-11-18 14:38:47,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:38:47,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 14:38:47,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:38:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 14:38:47,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 14:38:47,175 INFO L87 Difference]: Start difference. First operand 8690 states and 11033 transitions. Second operand has 39 states, 35 states have (on average 7.142857142857143) internal successors, (250), 33 states have internal predecessors, (250), 11 states have call successors, (54), 8 states have call predecessors, (54), 18 states have return successors, (58), 12 states have call predecessors, (58), 10 states have call successors, (58)