./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_loopvsstraightlinecode_50-1loop_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-58.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 7118802c613746983c8a41ad5ebf2b61588fe97f95c22ff109639027a00450af --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 11:50:49,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 11:50:49,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 11:50:49,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 11:50:49,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 11:50:49,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 11:50:49,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 11:50:49,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 11:50:49,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 11:50:49,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 11:50:49,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 11:50:49,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 11:50:49,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 11:50:49,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 11:50:49,209 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 11:50:49,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 11:50:49,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 11:50:49,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 11:50:49,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 11:50:49,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 11:50:49,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 11:50:49,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 11:50:49,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 11:50:49,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 11:50:49,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 11:50:49,216 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 11:50:49,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 11:50:49,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 11:50:49,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 11:50:49,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 11:50:49,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 11:50:49,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 11:50:49,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 11:50:49,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 11:50:49,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 11:50:49,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 11:50:49,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 11:50:49,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 11:50:49,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 11:50:49,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 11:50:49,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 11:50:49,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 11:50:49,221 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7118802c613746983c8a41ad5ebf2b61588fe97f95c22ff109639027a00450af [2024-10-11 11:50:49,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 11:50:49,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 11:50:49,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 11:50:49,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 11:50:49,531 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 11:50:49,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-58.i [2024-10-11 11:50:50,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 11:50:51,223 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 11:50:51,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-58.i [2024-10-11 11:50:51,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c6585b5c8/e69df58b22994b9e91e87360d805fe6a/FLAG54f6b3a58 [2024-10-11 11:50:51,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c6585b5c8/e69df58b22994b9e91e87360d805fe6a [2024-10-11 11:50:51,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 11:50:51,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 11:50:51,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 11:50:51,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 11:50:51,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 11:50:51,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f4b8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51, skipping insertion in model container [2024-10-11 11:50:51,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,300 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 11:50:51,482 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_loopvsstraightlinecode_50-1loop_file-58.i[915,928] [2024-10-11 11:50:51,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 11:50:51,590 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 11:50:51,604 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_loopvsstraightlinecode_50-1loop_file-58.i[915,928] [2024-10-11 11:50:51,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 11:50:51,660 INFO L204 MainTranslator]: Completed translation [2024-10-11 11:50:51,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51 WrapperNode [2024-10-11 11:50:51,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 11:50:51,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 11:50:51,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 11:50:51,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 11:50:51,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,727 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2024-10-11 11:50:51,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 11:50:51,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 11:50:51,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 11:50:51,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 11:50:51,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,771 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 11:50:51,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 11:50:51,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 11:50:51,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 11:50:51,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 11:50:51,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (1/1) ... [2024-10-11 11:50:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 11:50:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 11:50:51,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 11:50:51,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 11:50:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 11:50:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 11:50:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 11:50:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 11:50:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 11:50:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 11:50:51,997 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 11:50:51,999 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 11:50:52,422 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-11 11:50:52,424 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 11:50:52,479 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 11:50:52,481 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 11:50:52,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:50:52 BoogieIcfgContainer [2024-10-11 11:50:52,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 11:50:52,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 11:50:52,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 11:50:52,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 11:50:52,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:50:51" (1/3) ... [2024-10-11 11:50:52,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b05b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:50:52, skipping insertion in model container [2024-10-11 11:50:52,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:50:51" (2/3) ... [2024-10-11 11:50:52,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b05b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:50:52, skipping insertion in model container [2024-10-11 11:50:52,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:50:52" (3/3) ... [2024-10-11 11:50:52,496 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-58.i [2024-10-11 11:50:52,511 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 11:50:52,511 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 11:50:52,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 11:50:52,578 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;@49cda826, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 11:50:52,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 11:50:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 38 states have internal predecessors, (53), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-11 11:50:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-11 11:50:52,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:50:52,598 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:50:52,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:50:52,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:50:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1485306032, now seen corresponding path program 1 times [2024-10-11 11:50:52,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:50:52,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952685250] [2024-10-11 11:50:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:50:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:50:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:52,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 11:50:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:52,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 11:50:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 11:50:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 11:50:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 11:50:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 11:50:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 11:50:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 11:50:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-11 11:50:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 11:50:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 11:50:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 11:50:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 11:50:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 11:50:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-11 11:50:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-11 11:50:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 11:50:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-11 11:50:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-11 11:50:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-11 11:50:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 11:50:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-11 11:50:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-11 11:50:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-11 11:50:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:50:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-11 11:50:53,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 11:50:53,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952685250] [2024-10-11 11:50:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952685250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 11:50:53,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 11:50:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 11:50:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112138313] [2024-10-11 11:50:53,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 11:50:53,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 11:50:53,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 11:50:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 11:50:53,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 11:50:53,208 INFO L87 Difference]: Start difference. First operand has 64 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 38 states have internal predecessors, (53), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-10-11 11:50:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 11:50:53,264 INFO L93 Difference]: Finished difference Result 127 states and 225 transitions. [2024-10-11 11:50:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 11:50:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 147 [2024-10-11 11:50:53,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 11:50:53,277 INFO L225 Difference]: With dead ends: 127 [2024-10-11 11:50:53,278 INFO L226 Difference]: Without dead ends: 62 [2024-10-11 11:50:53,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 11:50:53,286 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 11:50:53,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 11:50:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-11 11:50:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-11 11:50:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-11 11:50:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 96 transitions. [2024-10-11 11:50:53,346 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 96 transitions. Word has length 147 [2024-10-11 11:50:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 11:50:53,348 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 96 transitions. [2024-10-11 11:50:53,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-10-11 11:50:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 96 transitions. [2024-10-11 11:50:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-11 11:50:53,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:50:53,355 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:50:53,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 11:50:53,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:50:53,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:50:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 661725460, now seen corresponding path program 1 times [2024-10-11 11:50:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:50:53,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396823942] [2024-10-11 11:50:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:50:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:50:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 11:51:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 11:51:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 11:51:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 11:51:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 11:51:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 11:51:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 11:51:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 11:51:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-11 11:51:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 11:51:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 11:51:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 11:51:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 11:51:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-11 11:51:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-11 11:51:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-11 11:51:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-11 11:51:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-11 11:51:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-11 11:51:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-11 11:51:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-11 11:51:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-11 11:51:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-11 11:51:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-11 11:51:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:51:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-11 11:51:39,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 11:51:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396823942] [2024-10-11 11:51:39,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396823942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 11:51:39,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 11:51:39,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 11:51:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116778198] [2024-10-11 11:51:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 11:51:39,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 11:51:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 11:51:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 11:51:39,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-10-11 11:51:39,148 INFO L87 Difference]: Start difference. First operand 62 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-10-11 11:51:40,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-11 11:51:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 11:51:42,216 INFO L93 Difference]: Finished difference Result 123 states and 179 transitions. [2024-10-11 11:51:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 11:51:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 147 [2024-10-11 11:51:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 11:51:42,221 INFO L225 Difference]: With dead ends: 123 [2024-10-11 11:51:42,221 INFO L226 Difference]: Without dead ends: 121 [2024-10-11 11:51:42,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2024-10-11 11:51:42,223 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 132 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-11 11:51:42,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 346 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-11 11:51:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-11 11:51:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 73. [2024-10-11 11:51:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-11 11:51:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 112 transitions. [2024-10-11 11:51:42,237 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 112 transitions. Word has length 147 [2024-10-11 11:51:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 11:51:42,239 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 112 transitions. [2024-10-11 11:51:42,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-10-11 11:51:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 112 transitions. [2024-10-11 11:51:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-11 11:51:42,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:51:42,244 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:51:42,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 11:51:42,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:51:42,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:51:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1858234474, now seen corresponding path program 1 times [2024-10-11 11:51:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:51:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895553974] [2024-10-11 11:51:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:51:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:51:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat