./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init6_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_init6_ground-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 388c926a79a6b5e7bef889b40d9a18e5c4aeb62f40be1f5a1ab2f0fe0344f6c1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:54:22,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:54:22,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:54:22,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:54:22,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:54:22,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:54:22,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:54:22,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:54:22,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:54:22,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:54:22,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:54:22,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:54:22,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:54:22,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:54:22,207 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:54:22,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:54:22,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:54:22,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:54:22,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:54:22,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:54:22,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:54:22,213 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:54:22,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:54:22,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:54:22,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:54:22,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:54:22,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:54:22,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:54:22,215 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:54:22,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:54:22,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:54:22,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:54:22,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:54:22,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:54:22,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:54:22,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:54:22,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:54:22,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:54:22,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:54:22,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:54:22,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:54:22,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:54:22,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 388c926a79a6b5e7bef889b40d9a18e5c4aeb62f40be1f5a1ab2f0fe0344f6c1 [2024-11-09 17:54:22,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:54:22,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:54:22,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:54:22,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:54:22,566 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:54:22,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init6_ground-2.i [2024-11-09 17:54:24,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:54:24,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:54:24,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init6_ground-2.i [2024-11-09 17:54:24,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9650db1e7/453bb89cd43c414a9ce911f70ca1594d/FLAG929017c68 [2024-11-09 17:54:24,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9650db1e7/453bb89cd43c414a9ce911f70ca1594d [2024-11-09 17:54:24,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:54:24,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:54:24,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:54:24,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:54:24,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:54:24,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ac06f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24, skipping insertion in model container [2024-11-09 17:54:24,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:54:24,871 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init6_ground-2.i[816,829] [2024-11-09 17:54:24,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:54:24,904 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:54:24,914 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init6_ground-2.i[816,829] [2024-11-09 17:54:24,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:54:24,936 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:54:24,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24 WrapperNode [2024-11-09 17:54:24,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:54:24,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:54:24,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:54:24,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:54:24,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,953 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,970 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-09 17:54:24,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:54:24,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:54:24,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:54:24,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:54:24,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,982 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,994 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-09 17:54:24,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:24,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:25,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:25,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:25,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:25,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:25,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:54:25,015 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:54:25,015 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:54:25,016 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:54:25,017 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (1/1) ... [2024-11-09 17:54:25,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:54:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:25,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 17:54:25,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 17:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:54:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:54:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:54:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:54:25,190 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:54:25,193 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:54:25,467 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-09 17:54:25,476 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 17:54:25,477 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:54:25,488 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:54:25,488 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:54:25,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:54:25 BoogieIcfgContainer [2024-11-09 17:54:25,489 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:54:25,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:54:25,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:54:25,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:54:25,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:54:24" (1/3) ... [2024-11-09 17:54:25,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156ba399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:54:25, skipping insertion in model container [2024-11-09 17:54:25,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:24" (2/3) ... [2024-11-09 17:54:25,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156ba399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:54:25, skipping insertion in model container [2024-11-09 17:54:25,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:54:25" (3/3) ... [2024-11-09 17:54:25,497 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-2.i [2024-11-09 17:54:25,514 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:54:25,514 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:54:25,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:54:25,598 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;@7c96dd21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:54:25,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:54:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 17:54:25,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:25,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:25,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:25,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1417860621, now seen corresponding path program 1 times [2024-11-09 17:54:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071026459] [2024-11-09 17:54:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:54:25,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:25,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071026459] [2024-11-09 17:54:25,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071026459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:54:25,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:54:25,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:54:25,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475819950] [2024-11-09 17:54:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:54:25,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:54:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:54:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:54:25,833 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:25,852 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2024-11-09 17:54:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:54:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 17:54:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:25,862 INFO L225 Difference]: With dead ends: 59 [2024-11-09 17:54:25,862 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 17:54:25,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:54:25,869 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:25,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:54:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 17:54:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 17:54:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-09 17:54:25,901 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2024-11-09 17:54:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:25,902 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-09 17:54:25,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-09 17:54:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 17:54:25,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:25,903 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:25,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:54:25,904 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:25,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash 837997502, now seen corresponding path program 1 times [2024-11-09 17:54:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721600797] [2024-11-09 17:54:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:54:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721600797] [2024-11-09 17:54:26,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721600797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:54:26,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:54:26,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:54:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325024190] [2024-11-09 17:54:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:54:26,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:54:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:54:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:54:26,018 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:26,090 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2024-11-09 17:54:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:54:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 17:54:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:26,092 INFO L225 Difference]: With dead ends: 62 [2024-11-09 17:54:26,092 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 17:54:26,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:54:26,093 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:26,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 42 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:54:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 17:54:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 17:54:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-09 17:54:26,103 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 25 [2024-11-09 17:54:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:26,104 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-09 17:54:26,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-09 17:54:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 17:54:26,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:26,105 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:26,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:54:26,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:26,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1376557570, now seen corresponding path program 1 times [2024-11-09 17:54:26,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:26,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910067800] [2024-11-09 17:54:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 17:54:26,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910067800] [2024-11-09 17:54:26,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910067800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:26,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522006584] [2024-11-09 17:54:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:26,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:26,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:26,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:54:26,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:54:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:26,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:54:26,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:54:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 17:54:26,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:54:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 17:54:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522006584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:54:26,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:54:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:54:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065021978] [2024-11-09 17:54:26,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:54:26,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:54:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:54:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:54:26,498 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:26,617 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2024-11-09 17:54:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:54:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 17:54:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:26,620 INFO L225 Difference]: With dead ends: 108 [2024-11-09 17:54:26,620 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 17:54:26,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:54:26,622 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:26,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:54:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 17:54:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-09 17:54:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2024-11-09 17:54:26,640 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 37 [2024-11-09 17:54:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:26,640 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2024-11-09 17:54:26,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2024-11-09 17:54:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 17:54:26,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:26,644 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:26,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 17:54:26,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:26,845 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:26,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1716526146, now seen corresponding path program 2 times [2024-11-09 17:54:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:26,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951409546] [2024-11-09 17:54:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 17:54:27,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:27,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951409546] [2024-11-09 17:54:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951409546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646384884] [2024-11-09 17:54:27,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:54:27,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:27,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:54:27,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:54:27,303 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:54:27,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:54:27,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:54:27,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:54:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 17:54:27,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:54:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 17:54:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646384884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:54:27,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:54:27,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 17:54:27,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507893884] [2024-11-09 17:54:27,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:54:27,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 17:54:27,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:27,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 17:54:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:54:27,451 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:27,664 INFO L93 Difference]: Finished difference Result 210 states and 257 transitions. [2024-11-09 17:54:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 17:54:27,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 17:54:27,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:27,667 INFO L225 Difference]: With dead ends: 210 [2024-11-09 17:54:27,669 INFO L226 Difference]: Without dead ends: 147 [2024-11-09 17:54:27,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:54:27,673 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 120 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:27,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 114 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 17:54:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-09 17:54:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-09 17:54:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.047945205479452) internal successors, (153), 146 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2024-11-09 17:54:27,696 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 73 [2024-11-09 17:54:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:27,697 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2024-11-09 17:54:27,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2024-11-09 17:54:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-09 17:54:27,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:27,703 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:27,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 17:54:27,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 17:54:27,908 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:27,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash 625286846, now seen corresponding path program 3 times [2024-11-09 17:54:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:27,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471464230] [2024-11-09 17:54:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-09 17:54:28,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:28,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471464230] [2024-11-09 17:54:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471464230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:28,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603331040] [2024-11-09 17:54:28,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:54:28,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:28,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:54:28,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:54:38,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 17:54:38,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:54:38,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 17:54:38,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:54:38,576 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 40 proven. 110 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-11-09 17:54:38,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:54:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-11-09 17:54:38,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603331040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:54:38,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:54:38,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2024-11-09 17:54:38,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335744276] [2024-11-09 17:54:38,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:54:38,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 17:54:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 17:54:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-09 17:54:38,858 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:39,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:39,235 INFO L93 Difference]: Finished difference Result 414 states and 497 transitions. [2024-11-09 17:54:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 17:54:39,236 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-09 17:54:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:39,239 INFO L225 Difference]: With dead ends: 414 [2024-11-09 17:54:39,239 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 17:54:39,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-09 17:54:39,241 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 273 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:39,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 186 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 17:54:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 17:54:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-11-09 17:54:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.0241379310344827) internal successors, (297), 290 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 297 transitions. [2024-11-09 17:54:39,276 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 297 transitions. Word has length 145 [2024-11-09 17:54:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:39,277 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 297 transitions. [2024-11-09 17:54:39,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 297 transitions. [2024-11-09 17:54:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-09 17:54:39,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:39,284 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:39,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 17:54:39,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:39,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:39,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1242557762, now seen corresponding path program 4 times [2024-11-09 17:54:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:39,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832858059] [2024-11-09 17:54:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2024-11-09 17:54:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832858059] [2024-11-09 17:54:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832858059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:40,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606431243] [2024-11-09 17:54:40,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:54:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:40,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:54:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:54:41,246 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:54:41,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:54:41,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 17:54:41,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:54:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2024-11-09 17:54:41,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:54:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2024-11-09 17:54:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606431243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:54:42,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:54:42,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 17:54:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782579590] [2024-11-09 17:54:42,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:54:42,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 17:54:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:42,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 17:54:42,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 17:54:42,222 INFO L87 Difference]: Start difference. First operand 291 states and 297 transitions. Second operand has 49 states, 49 states have (on average 2.5306122448979593) internal successors, (124), 49 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:43,218 INFO L93 Difference]: Finished difference Result 822 states and 977 transitions. [2024-11-09 17:54:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 17:54:43,219 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.5306122448979593) internal successors, (124), 49 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2024-11-09 17:54:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:43,222 INFO L225 Difference]: With dead ends: 822 [2024-11-09 17:54:43,225 INFO L226 Difference]: Without dead ends: 579 [2024-11-09 17:54:43,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 17:54:43,231 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 690 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:43,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 366 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 17:54:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-09 17:54:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-09 17:54:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.0121107266435987) internal successors, (585), 578 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 585 transitions. [2024-11-09 17:54:43,283 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 585 transitions. Word has length 289 [2024-11-09 17:54:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:43,283 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 585 transitions. [2024-11-09 17:54:43,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.5306122448979593) internal successors, (124), 49 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 585 transitions. [2024-11-09 17:54:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-09 17:54:43,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:43,301 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:43,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 17:54:43,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:43,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:43,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1719923390, now seen corresponding path program 5 times [2024-11-09 17:54:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:43,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797080487] [2024-11-09 17:54:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12972 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2024-11-09 17:54:47,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:47,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797080487] [2024-11-09 17:54:47,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797080487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540213084] [2024-11-09 17:54:47,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:54:47,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:47,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:47,573 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:54:47,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process