./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 378186c6d9208dcac7e742ba7e3d709cb5ca4759d0a6109e61503d5010b43317 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:04:01,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:04:01,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:04:01,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:04:01,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:04:01,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:04:01,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:04:01,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:04:01,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:04:01,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:04:01,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:04:01,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:04:01,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:04:01,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:04:01,840 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:04:01,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:04:01,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:04:01,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:04:01,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:04:01,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:04:01,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:04:01,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:04:01,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:04:01,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:04:01,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:04:01,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:04:01,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:04:01,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:04:01,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:04:01,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:04:01,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:04:01,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:04:01,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:04:01,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:04:01,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:04:01,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:04:01,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:04:01,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:04:01,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:04:01,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:04:01,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:04:01,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:04:01,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 378186c6d9208dcac7e742ba7e3d709cb5ca4759d0a6109e61503d5010b43317 [2024-10-14 14:04:02,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:04:02,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:04:02,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:04:02,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:04:02,068 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:04:02,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i [2024-10-14 14:04:03,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:04:03,510 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:04:03,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i [2024-10-14 14:04:03,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62a59ab8/1e55fadf05794cf3bfddb77d2d1cd2b3/FLAGcc132cd3f [2024-10-14 14:04:03,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62a59ab8/1e55fadf05794cf3bfddb77d2d1cd2b3 [2024-10-14 14:04:03,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:04:03,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:04:03,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:04:03,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:04:03,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:04:03,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ad2325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03, skipping insertion in model container [2024-10-14 14:04:03,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:04:03,688 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i[917,930] [2024-10-14 14:04:03,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:04:03,768 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:04:03,787 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i[917,930] [2024-10-14 14:04:03,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:04:03,872 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:04:03,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03 WrapperNode [2024-10-14 14:04:03,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:04:03,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:04:03,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:04:03,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:04:03,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,945 INFO L138 Inliner]: procedures = 29, calls = 139, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 483 [2024-10-14 14:04:03,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:04:03,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:04:03,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:04:03,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:04:03,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,994 INFO L175 MemorySlicer]: Split 115 memory accesses to 2 slices as follows [2, 113]. 98 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10]. The 13 writes are split as follows [0, 13]. [2024-10-14 14:04:03,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:03,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:04,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:04,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:04,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:04,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:04,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:04:04,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:04:04,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:04:04,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:04:04,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (1/1) ... [2024-10-14 14:04:04,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:04:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:04,069 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) [2024-10-14 14:04:04,072 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 [2024-10-14 14:04:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:04:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 14:04:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 14:04:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:04:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:04:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 14:04:04,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 14:04:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:04:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:04:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 14:04:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 14:04:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 14:04:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 14:04:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:04:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:04:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:04:04,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:04:04,218 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:04:04,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:04:04,636 INFO L? ?]: Removed 145 outVars from TransFormulas that were not future-live. [2024-10-14 14:04:04,636 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:04:04,670 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:04:04,671 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 14:04:04,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:04:04 BoogieIcfgContainer [2024-10-14 14:04:04,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:04:04,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:04:04,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:04:04,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:04:04,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:04:03" (1/3) ... [2024-10-14 14:04:04,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394a832b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:04:04, skipping insertion in model container [2024-10-14 14:04:04,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:04:03" (2/3) ... [2024-10-14 14:04:04,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394a832b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:04:04, skipping insertion in model container [2024-10-14 14:04:04,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:04:04" (3/3) ... [2024-10-14 14:04:04,681 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-18.i [2024-10-14 14:04:04,696 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:04:04,696 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:04:04,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:04:04,763 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;@12391af5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:04:04,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 14:04:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 86 states have (on average 1.5) internal successors, (129), 87 states have internal predecessors, (129), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 14:04:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-14 14:04:04,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:04,779 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:04,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:04,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash -830372706, now seen corresponding path program 1 times [2024-10-14 14:04:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:04,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098968658] [2024-10-14 14:04:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098968658] [2024-10-14 14:04:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098968658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:05,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:04:05,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387637168] [2024-10-14 14:04:05,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:05,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 14:04:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:05,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 14:04:05,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:04:05,172 INFO L87 Difference]: Start difference. First operand has 101 states, 86 states have (on average 1.5) internal successors, (129), 87 states have internal predecessors, (129), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 14:04:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:05,214 INFO L93 Difference]: Finished difference Result 199 states and 316 transitions. [2024-10-14 14:04:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 14:04:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-10-14 14:04:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:05,225 INFO L225 Difference]: With dead ends: 199 [2024-10-14 14:04:05,226 INFO L226 Difference]: Without dead ends: 99 [2024-10-14 14:04:05,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:04:05,233 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:05,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:04:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-14 14:04:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-10-14 14:04:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 85 states have internal predecessors, (124), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 14:04:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 148 transitions. [2024-10-14 14:04:05,275 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 148 transitions. Word has length 102 [2024-10-14 14:04:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:05,277 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 148 transitions. [2024-10-14 14:04:05,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 14:04:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 148 transitions. [2024-10-14 14:04:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-14 14:04:05,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:05,281 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:05,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:04:05,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:05,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash -746850742, now seen corresponding path program 1 times [2024-10-14 14:04:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:05,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834365786] [2024-10-14 14:04:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:06,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834365786] [2024-10-14 14:04:06,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834365786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:06,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:04:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315299679] [2024-10-14 14:04:06,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:06,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:04:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:04:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:04:06,575 INFO L87 Difference]: Start difference. First operand 99 states and 148 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 14:04:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:06,899 INFO L93 Difference]: Finished difference Result 295 states and 442 transitions. [2024-10-14 14:04:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:04:06,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-10-14 14:04:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:06,901 INFO L225 Difference]: With dead ends: 295 [2024-10-14 14:04:06,901 INFO L226 Difference]: Without dead ends: 197 [2024-10-14 14:04:06,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:04:06,903 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 117 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:06,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 436 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 14:04:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-14 14:04:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2024-10-14 14:04:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 163 states have (on average 1.4539877300613497) internal successors, (237), 163 states have internal predecessors, (237), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 14:04:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 285 transitions. [2024-10-14 14:04:06,922 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 285 transitions. Word has length 102 [2024-10-14 14:04:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:06,923 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 285 transitions. [2024-10-14 14:04:06,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 14:04:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 285 transitions. [2024-10-14 14:04:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-14 14:04:06,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:06,926 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:06,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:04:06,926 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:06,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash 57174979, now seen corresponding path program 1 times [2024-10-14 14:04:06,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:06,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700853082] [2024-10-14 14:04:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:07,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:08,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700853082] [2024-10-14 14:04:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700853082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:08,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 14:04:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672944636] [2024-10-14 14:04:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:08,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 14:04:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 14:04:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:04:08,006 INFO L87 Difference]: Start difference. First operand 190 states and 285 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 14:04:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:08,377 INFO L93 Difference]: Finished difference Result 477 states and 716 transitions. [2024-10-14 14:04:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:04:08,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2024-10-14 14:04:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:08,380 INFO L225 Difference]: With dead ends: 477 [2024-10-14 14:04:08,380 INFO L226 Difference]: Without dead ends: 288 [2024-10-14 14:04:08,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:04:08,388 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 304 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:08,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 400 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 14:04:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-14 14:04:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 192. [2024-10-14 14:04:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 165 states have (on average 1.4484848484848485) internal successors, (239), 165 states have internal predecessors, (239), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 14:04:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2024-10-14 14:04:08,417 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 103 [2024-10-14 14:04:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:08,417 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2024-10-14 14:04:08,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 14:04:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2024-10-14 14:04:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-14 14:04:08,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:08,421 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:08,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:04:08,421 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:08,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -428036783, now seen corresponding path program 1 times [2024-10-14 14:04:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:08,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498201148] [2024-10-14 14:04:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498201148] [2024-10-14 14:04:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498201148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:04:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181322833] [2024-10-14 14:04:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:08,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:04:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:08,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:04:08,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:04:08,627 INFO L87 Difference]: Start difference. First operand 192 states and 287 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:08,672 INFO L93 Difference]: Finished difference Result 292 states and 437 transitions. [2024-10-14 14:04:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:04:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2024-10-14 14:04:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:08,675 INFO L225 Difference]: With dead ends: 292 [2024-10-14 14:04:08,675 INFO L226 Difference]: Without dead ends: 194 [2024-10-14 14:04:08,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:04:08,676 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 3 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:08,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 402 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:04:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-10-14 14:04:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2024-10-14 14:04:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 166 states have (on average 1.4457831325301205) internal successors, (240), 166 states have internal predecessors, (240), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 14:04:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 288 transitions. [2024-10-14 14:04:08,701 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 288 transitions. Word has length 103 [2024-10-14 14:04:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:08,701 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 288 transitions. [2024-10-14 14:04:08,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 288 transitions. [2024-10-14 14:04:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-14 14:04:08,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:08,703 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:08,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:04:08,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:08,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1449105137, now seen corresponding path program 1 times [2024-10-14 14:04:08,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:08,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294526709] [2024-10-14 14:04:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:08,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:08,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:08,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294526709] [2024-10-14 14:04:08,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294526709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:08,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:04:08,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878223758] [2024-10-14 14:04:08,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:08,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:04:08,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:04:08,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:04:08,885 INFO L87 Difference]: Start difference. First operand 193 states and 288 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:08,918 INFO L93 Difference]: Finished difference Result 294 states and 439 transitions. [2024-10-14 14:04:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:04:08,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2024-10-14 14:04:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:08,919 INFO L225 Difference]: With dead ends: 294 [2024-10-14 14:04:08,920 INFO L226 Difference]: Without dead ends: 195 [2024-10-14 14:04:08,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:04:08,921 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 3 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:08,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 406 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:04:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-10-14 14:04:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2024-10-14 14:04:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 167 states have (on average 1.4431137724550898) internal successors, (241), 167 states have internal predecessors, (241), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 14:04:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 289 transitions. [2024-10-14 14:04:08,930 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 289 transitions. Word has length 103 [2024-10-14 14:04:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:08,931 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 289 transitions. [2024-10-14 14:04:08,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 289 transitions. [2024-10-14 14:04:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-14 14:04:08,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:08,932 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:08,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:04:08,933 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:08,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash -748040559, now seen corresponding path program 1 times [2024-10-14 14:04:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572345661] [2024-10-14 14:04:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-14 14:04:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572345661] [2024-10-14 14:04:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572345661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:10,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869144812] [2024-10-14 14:04:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:10,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:10,118 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) [2024-10-14 14:04:10,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:04:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:10,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-14 14:04:10,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:10,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 14:04:10,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:11,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:11,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:11,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:12,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:12,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:12,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2024-10-14 14:04:13,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 38 [2024-10-14 14:04:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 24 [2024-10-14 14:04:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-10-14 14:04:13,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:14,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869144812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:14,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:04:14,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2024-10-14 14:04:14,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050498596] [2024-10-14 14:04:14,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:14,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 14:04:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 14:04:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2024-10-14 14:04:14,137 INFO L87 Difference]: Start difference. First operand 194 states and 289 transitions. Second operand has 23 states, 21 states have (on average 4.238095238095238) internal successors, (89), 22 states have internal predecessors, (89), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-10-14 14:04:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:17,032 INFO L93 Difference]: Finished difference Result 700 states and 1030 transitions. [2024-10-14 14:04:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 14:04:17,033 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.238095238095238) internal successors, (89), 22 states have internal predecessors, (89), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 103 [2024-10-14 14:04:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:17,036 INFO L225 Difference]: With dead ends: 700 [2024-10-14 14:04:17,037 INFO L226 Difference]: Without dead ends: 600 [2024-10-14 14:04:17,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=416, Invalid=2340, Unknown=0, NotChecked=0, Total=2756 [2024-10-14 14:04:17,040 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 1251 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:17,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 3103 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 14:04:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-10-14 14:04:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 313. [2024-10-14 14:04:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 270 states have (on average 1.4259259259259258) internal successors, (385), 270 states have internal predecessors, (385), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:04:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 457 transitions. [2024-10-14 14:04:17,067 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 457 transitions. Word has length 103 [2024-10-14 14:04:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:17,068 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 457 transitions. [2024-10-14 14:04:17,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.238095238095238) internal successors, (89), 22 states have internal predecessors, (89), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-10-14 14:04:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 457 transitions. [2024-10-14 14:04:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-14 14:04:17,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:17,069 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:17,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:04:17,270 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 [2024-10-14 14:04:17,270 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:17,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash -759101914, now seen corresponding path program 1 times [2024-10-14 14:04:17,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:17,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690926052] [2024-10-14 14:04:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690926052] [2024-10-14 14:04:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690926052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:17,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:04:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563066359] [2024-10-14 14:04:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:17,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:04:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:04:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:04:17,963 INFO L87 Difference]: Start difference. First operand 313 states and 457 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 14:04:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:18,313 INFO L93 Difference]: Finished difference Result 735 states and 1073 transitions. [2024-10-14 14:04:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:04:18,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-10-14 14:04:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:18,316 INFO L225 Difference]: With dead ends: 735 [2024-10-14 14:04:18,316 INFO L226 Difference]: Without dead ends: 423 [2024-10-14 14:04:18,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:04:18,317 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 127 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:18,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 665 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 14:04:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-10-14 14:04:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 412. [2024-10-14 14:04:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 355 states have (on average 1.419718309859155) internal successors, (504), 355 states have internal predecessors, (504), 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) [2024-10-14 14:04:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 600 transitions. [2024-10-14 14:04:18,343 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 600 transitions. Word has length 104 [2024-10-14 14:04:18,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:18,344 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 600 transitions. [2024-10-14 14:04:18,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 14:04:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 600 transitions. [2024-10-14 14:04:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-14 14:04:18,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:18,347 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:18,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:04:18,347 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:18,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1541720676, now seen corresponding path program 1 times [2024-10-14 14:04:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:18,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771860919] [2024-10-14 14:04:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:18,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:19,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:19,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:19,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:19,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:19,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771860919] [2024-10-14 14:04:19,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771860919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:19,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:19,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:04:19,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749381021] [2024-10-14 14:04:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:19,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:04:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:04:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:04:19,019 INFO L87 Difference]: Start difference. First operand 412 states and 600 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 14:04:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:19,593 INFO L93 Difference]: Finished difference Result 884 states and 1289 transitions. [2024-10-14 14:04:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:04:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-10-14 14:04:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:19,596 INFO L225 Difference]: With dead ends: 884 [2024-10-14 14:04:19,596 INFO L226 Difference]: Without dead ends: 571 [2024-10-14 14:04:19,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:04:19,599 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 385 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:19,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 810 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 14:04:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-10-14 14:04:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 422. [2024-10-14 14:04:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 365 states have (on average 1.4246575342465753) internal successors, (520), 365 states have internal predecessors, (520), 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) [2024-10-14 14:04:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 616 transitions. [2024-10-14 14:04:19,629 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 616 transitions. Word has length 104 [2024-10-14 14:04:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:19,630 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 616 transitions. [2024-10-14 14:04:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-14 14:04:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 616 transitions. [2024-10-14 14:04:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 14:04:19,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:19,631 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:19,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:04:19,631 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:19,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash 557799098, now seen corresponding path program 1 times [2024-10-14 14:04:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026988022] [2024-10-14 14:04:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:20,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026988022] [2024-10-14 14:04:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026988022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:20,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 14:04:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640425627] [2024-10-14 14:04:20,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:20,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 14:04:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 14:04:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:04:20,263 INFO L87 Difference]: Start difference. First operand 422 states and 616 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 14:04:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:20,680 INFO L93 Difference]: Finished difference Result 649 states and 947 transitions. [2024-10-14 14:04:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:04:20,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2024-10-14 14:04:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:20,685 INFO L225 Difference]: With dead ends: 649 [2024-10-14 14:04:20,685 INFO L226 Difference]: Without dead ends: 433 [2024-10-14 14:04:20,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:04:20,686 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 216 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:20,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 596 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 14:04:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-10-14 14:04:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 426. [2024-10-14 14:04:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 369 states have (on average 1.4200542005420054) internal successors, (524), 369 states have internal predecessors, (524), 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) [2024-10-14 14:04:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 620 transitions. [2024-10-14 14:04:20,710 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 620 transitions. Word has length 105 [2024-10-14 14:04:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:20,711 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 620 transitions. [2024-10-14 14:04:20,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 14:04:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 620 transitions. [2024-10-14 14:04:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 14:04:20,712 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:20,712 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:20,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 14:04:20,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:20,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1879362677, now seen corresponding path program 1 times [2024-10-14 14:04:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311914564] [2024-10-14 14:04:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:20,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:20,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311914564] [2024-10-14 14:04:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311914564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:20,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:20,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:04:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393337763] [2024-10-14 14:04:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:20,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:04:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:04:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:04:20,948 INFO L87 Difference]: Start difference. First operand 426 states and 620 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:21,286 INFO L93 Difference]: Finished difference Result 1119 states and 1642 transitions. [2024-10-14 14:04:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:04:21,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2024-10-14 14:04:21,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:21,289 INFO L225 Difference]: With dead ends: 1119 [2024-10-14 14:04:21,289 INFO L226 Difference]: Without dead ends: 798 [2024-10-14 14:04:21,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:04:21,293 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 212 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:21,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 937 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 14:04:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-10-14 14:04:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 452. [2024-10-14 14:04:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 395 states have internal predecessors, (566), 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) [2024-10-14 14:04:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 662 transitions. [2024-10-14 14:04:21,326 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 662 transitions. Word has length 105 [2024-10-14 14:04:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:21,326 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 662 transitions. [2024-10-14 14:04:21,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 662 transitions. [2024-10-14 14:04:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 14:04:21,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:21,327 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:21,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 14:04:21,328 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:21,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:21,328 INFO L85 PathProgramCache]: Analyzing trace with hash -320122634, now seen corresponding path program 1 times [2024-10-14 14:04:21,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:21,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255065208] [2024-10-14 14:04:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:21,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-14 14:04:22,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255065208] [2024-10-14 14:04:22,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255065208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931589247] [2024-10-14 14:04:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:22,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:22,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:22,227 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) [2024-10-14 14:04:22,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:04:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:22,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-14 14:04:22,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:22,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 14:04:22,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:22,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:22,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:23,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:23,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:23,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:23,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:23,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-10-14 14:04:23,598 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-14 14:04:23,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-10-14 14:04:23,634 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-14 14:04:23,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-14 14:04:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-10-14 14:04:23,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931589247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:23,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:04:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2024-10-14 14:04:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802240050] [2024-10-14 14:04:23,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:23,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 14:04:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 14:04:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-10-14 14:04:23,866 INFO L87 Difference]: Start difference. First operand 452 states and 662 transitions. Second operand has 24 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-10-14 14:04:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:24,978 INFO L93 Difference]: Finished difference Result 1019 states and 1493 transitions. [2024-10-14 14:04:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 14:04:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 105 [2024-10-14 14:04:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:24,981 INFO L225 Difference]: With dead ends: 1019 [2024-10-14 14:04:24,982 INFO L226 Difference]: Without dead ends: 674 [2024-10-14 14:04:24,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 14:04:24,983 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 622 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:24,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1687 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 14:04:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-10-14 14:04:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 426. [2024-10-14 14:04:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 369 states have (on average 1.3929539295392954) internal successors, (514), 369 states have internal predecessors, (514), 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) [2024-10-14 14:04:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 610 transitions. [2024-10-14 14:04:25,011 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 610 transitions. Word has length 105 [2024-10-14 14:04:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:25,012 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 610 transitions. [2024-10-14 14:04:25,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-10-14 14:04:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 610 transitions. [2024-10-14 14:04:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-14 14:04:25,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:25,014 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:25,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:04:25,214 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,SelfDestructingSolverStorable10 [2024-10-14 14:04:25,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:25,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1890267798, now seen corresponding path program 1 times [2024-10-14 14:04:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729836719] [2024-10-14 14:04:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 14:04:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-14 14:04:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729836719] [2024-10-14 14:04:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729836719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:25,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:04:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103291832] [2024-10-14 14:04:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:25,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:04:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:04:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:04:25,341 INFO L87 Difference]: Start difference. First operand 426 states and 610 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:25,399 INFO L93 Difference]: Finished difference Result 851 states and 1219 transitions. [2024-10-14 14:04:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:04:25,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2024-10-14 14:04:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:25,402 INFO L225 Difference]: With dead ends: 851 [2024-10-14 14:04:25,402 INFO L226 Difference]: Without dead ends: 422 [2024-10-14 14:04:25,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:04:25,405 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 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 [2024-10-14 14:04:25,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:04:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-10-14 14:04:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-10-14 14:04:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 365 states have (on average 1.3863013698630138) internal successors, (506), 365 states have internal predecessors, (506), 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) [2024-10-14 14:04:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 602 transitions. [2024-10-14 14:04:25,441 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 602 transitions. Word has length 106 [2024-10-14 14:04:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:25,441 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 602 transitions. [2024-10-14 14:04:25,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-10-14 14:04:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 602 transitions. [2024-10-14 14:04:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-14 14:04:25,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:25,443 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:25,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:04:25,443 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -876006015, now seen corresponding path program 1 times [2024-10-14 14:04:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995706084] [2024-10-14 14:04:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat