./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13f01b13f842e70fa5dc0726b8b5b83cfbe12eb21a3c45812a2355ca865a56c3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:43:49,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:43:49,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:43:49,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:43:49,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:43:49,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:43:49,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:43:49,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:43:49,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:43:49,788 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:43:49,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:43:49,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:43:49,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:43:49,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:43:49,790 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:43:49,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:43:49,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:43:49,790 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:43:49,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:43:49,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:43:49,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:43:49,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:43:49,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:43:49,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:43:49,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:43:49,795 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:43:49,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:43:49,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:43:49,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:43:49,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:43:49,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:43:49,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:43:49,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:43:49,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:43:49,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:43:49,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:43:49,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f01b13f842e70fa5dc0726b8b5b83cfbe12eb21a3c45812a2355ca865a56c3 [2024-10-12 18:43:49,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:43:50,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:43:50,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:43:50,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:43:50,022 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:43:50,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c [2024-10-12 18:43:51,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:43:51,456 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:43:51,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound100.c [2024-10-12 18:43:51,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db5fe449/03d0100bfdc041f1ab8dbfd136d152c9/FLAG7ad8c16e9 [2024-10-12 18:43:51,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db5fe449/03d0100bfdc041f1ab8dbfd136d152c9 [2024-10-12 18:43:51,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:43:51,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:43:51,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:43:51,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:43:51,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:43:51,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a61198d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51, skipping insertion in model container [2024-10-12 18:43:51,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:43:51,640 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/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2024-10-12 18:43:51,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:43:51,662 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:43:51,670 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/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2024-10-12 18:43:51,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:43:51,688 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:43:51,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51 WrapperNode [2024-10-12 18:43:51,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:43:51,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:43:51,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:43:51,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:43:51,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,714 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-10-12 18:43:51,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:43:51,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:43:51,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:43:51,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:43:51,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,733 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]. [2024-10-12 18:43:51,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:43:51,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:43:51,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:43:51,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:43:51,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (1/1) ... [2024-10-12 18:43:51,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:43:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:43:51,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 18:43:51,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 18:43:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:43:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-12 18:43:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-12 18:43:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:43:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:43:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:43:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 18:43:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 18:43:51,868 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:43:51,870 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:43:51,972 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 18:43:51,972 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:43:52,002 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:43:52,003 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 18:43:52,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:43:52 BoogieIcfgContainer [2024-10-12 18:43:52,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:43:52,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:43:52,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:43:52,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:43:52,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:43:51" (1/3) ... [2024-10-12 18:43:52,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683b482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:43:52, skipping insertion in model container [2024-10-12 18:43:52,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:51" (2/3) ... [2024-10-12 18:43:52,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683b482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:43:52, skipping insertion in model container [2024-10-12 18:43:52,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:43:52" (3/3) ... [2024-10-12 18:43:52,013 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound100.c [2024-10-12 18:43:52,027 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:43:52,028 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:43:52,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:43:52,081 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;@666b8e28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:43:52,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:43:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 18:43:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:43:52,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:52,091 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:43:52,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:52,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 866122637, now seen corresponding path program 1 times [2024-10-12 18:43:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247786974] [2024-10-12 18:43:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:43:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:52,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:43:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:52,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:43:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:43:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:43:52,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247786974] [2024-10-12 18:43:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247786974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:43:52,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:43:52,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:43:52,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145928850] [2024-10-12 18:43:52,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:43:52,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:43:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:43:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:43:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:43:52,304 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 18:43:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:43:52,331 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2024-10-12 18:43:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:43:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-10-12 18:43:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:43:52,341 INFO L225 Difference]: With dead ends: 46 [2024-10-12 18:43:52,341 INFO L226 Difference]: Without dead ends: 22 [2024-10-12 18:43:52,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:43:52,349 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:43:52,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:43:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-12 18:43:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-12 18:43:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 18:43:52,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-10-12 18:43:52,384 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2024-10-12 18:43:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:43:52,385 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-10-12 18:43:52,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 18:43:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-10-12 18:43:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:43:52,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:52,388 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:43:52,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:43:52,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:52,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:52,389 INFO L85 PathProgramCache]: Analyzing trace with hash 266317329, now seen corresponding path program 1 times [2024-10-12 18:43:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676340480] [2024-10-12 18:43:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:52,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:43:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:43:52,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886656319] [2024-10-12 18:43:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:52,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:52,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:43:52,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:43:52,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:43:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:52,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:43:52,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:43:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:43:52,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:43:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:43:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676340480] [2024-10-12 18:43:52,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:43:52,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886656319] [2024-10-12 18:43:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886656319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:43:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:43:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 18:43:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948704316] [2024-10-12 18:43:52,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:43:52,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:43:52,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:43:52,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:43:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:43:52,680 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-12 18:43:52,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:43:52,774 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-10-12 18:43:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:43:52,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-10-12 18:43:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:43:52,775 INFO L225 Difference]: With dead ends: 34 [2024-10-12 18:43:52,776 INFO L226 Difference]: Without dead ends: 32 [2024-10-12 18:43:52,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:43:52,777 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:43:52,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:43:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-12 18:43:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-10-12 18:43:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 18:43:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-10-12 18:43:52,783 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2024-10-12 18:43:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:43:52,784 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-10-12 18:43:52,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-12 18:43:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-10-12 18:43:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 18:43:52,785 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:52,785 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:43:52,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 18:43:52,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:52,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:52,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash -125875189, now seen corresponding path program 1 times [2024-10-12 18:43:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:52,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021822057] [2024-10-12 18:43:52,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:52,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:43:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:53,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:43:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:53,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:43:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:53,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 18:43:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:43:53,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:43:53,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021822057] [2024-10-12 18:43:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021822057] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:43:53,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080156514] [2024-10-12 18:43:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:53,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:53,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:43:53,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:43:53,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:43:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:53,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:43:53,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:43:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:43:53,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:43:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080156514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:43:53,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:43:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-12 18:43:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937858758] [2024-10-12 18:43:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:43:53,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:43:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:43:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:43:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:43:53,403 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 18:43:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:43:53,485 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-10-12 18:43:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:43:53,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-10-12 18:43:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:43:53,486 INFO L225 Difference]: With dead ends: 38 [2024-10-12 18:43:53,486 INFO L226 Difference]: Without dead ends: 30 [2024-10-12 18:43:53,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:43:53,487 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:43:53,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:43:53,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-12 18:43:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-12 18:43:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 18:43:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-10-12 18:43:53,498 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2024-10-12 18:43:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:43:53,498 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-10-12 18:43:53,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 18:43:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-10-12 18:43:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 18:43:53,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:53,499 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] [2024-10-12 18:43:53,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:43:53,703 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,SelfDestructingSolverStorable2 [2024-10-12 18:43:53,704 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:53,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1056709002, now seen corresponding path program 1 times [2024-10-12 18:43:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357429595] [2024-10-12 18:43:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:53,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:43:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:43:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782843973] [2024-10-12 18:43:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:53,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:43:53,720 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) [2024-10-12 18:43:53,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:43:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:53,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 18:43:53,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:43:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:43:53,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:43:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:43:54,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:43:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357429595] [2024-10-12 18:43:54,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:43:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782843973] [2024-10-12 18:43:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782843973] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:43:54,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:43:54,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2024-10-12 18:43:54,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477178336] [2024-10-12 18:43:54,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:43:54,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 18:43:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:43:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 18:43:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:43:54,159 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 18:43:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:43:54,402 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2024-10-12 18:43:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 18:43:54,402 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-10-12 18:43:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:43:54,403 INFO L225 Difference]: With dead ends: 44 [2024-10-12 18:43:54,403 INFO L226 Difference]: Without dead ends: 40 [2024-10-12 18:43:54,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:43:54,405 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:43:54,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 108 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:43:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-12 18:43:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2024-10-12 18:43:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-12 18:43:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-10-12 18:43:54,412 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2024-10-12 18:43:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:43:54,412 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-10-12 18:43:54,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 18:43:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-10-12 18:43:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:43:54,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:54,413 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:43:54,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 18:43:54,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:54,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:54,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1266497530, now seen corresponding path program 1 times [2024-10-12 18:43:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843643617] [2024-10-12 18:43:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:54,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:43:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:54,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:43:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:54,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:43:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:54,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 18:43:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:54,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:43:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:43:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:43:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843643617] [2024-10-12 18:43:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843643617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:43:54,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956789057] [2024-10-12 18:43:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:54,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:54,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:43:54,796 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) [2024-10-12 18:43:54,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:43:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:54,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 18:43:54,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:43:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 18:43:55,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:43:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 18:43:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956789057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:43:55,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:43:55,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2024-10-12 18:43:55,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992137195] [2024-10-12 18:43:55,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:43:55,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 18:43:55,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:43:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 18:43:55,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2024-10-12 18:43:55,733 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-10-12 18:43:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:43:57,408 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-10-12 18:43:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:43:57,408 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 34 [2024-10-12 18:43:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:43:57,410 INFO L225 Difference]: With dead ends: 47 [2024-10-12 18:43:57,411 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 18:43:57,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:43:57,413 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:43:57,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 106 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:43:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 18:43:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 18:43:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-12 18:43:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 18:43:57,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2024-10-12 18:43:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:43:57,415 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 18:43:57,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-10-12 18:43:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 18:43:57,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 18:43:57,420 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 18:43:57,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 18:43:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:43:57,627 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-12 18:43:57,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 18:43:58,002 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 18:43:58,017 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-12 18:43:58,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:43:58 BoogieIcfgContainer [2024-10-12 18:43:58,026 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 18:43:58,026 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 18:43:58,026 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 18:43:58,026 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 18:43:58,027 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:43:52" (3/4) ... [2024-10-12 18:43:58,028 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 18:43:58,032 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-12 18:43:58,032 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-12 18:43:58,035 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-12 18:43:58,036 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 18:43:58,036 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 18:43:58,036 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 18:43:58,112 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 18:43:58,113 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 18:43:58,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 18:43:58,115 INFO L158 Benchmark]: Toolchain (without parser) took 6635.08ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 150.8MB in the beginning and 172.0MB in the end (delta: -21.2MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,115 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:43:58,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.16ms. Allocated memory is still 180.4MB. Free memory was 150.6MB in the beginning and 142.0MB in the end (delta: 8.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.82ms. Allocated memory is still 180.4MB. Free memory was 142.0MB in the beginning and 140.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,116 INFO L158 Benchmark]: Boogie Preprocessor took 27.51ms. Allocated memory is still 180.4MB. Free memory was 140.4MB in the beginning and 138.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,116 INFO L158 Benchmark]: RCFGBuilder took 260.86ms. Allocated memory is still 180.4MB. Free memory was 138.3MB in the beginning and 126.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,116 INFO L158 Benchmark]: TraceAbstraction took 6020.09ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 125.7MB in the beginning and 177.2MB in the end (delta: -51.5MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,116 INFO L158 Benchmark]: Witness Printer took 88.52ms. Allocated memory is still 218.1MB. Free memory was 177.2MB in the beginning and 172.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 18:43:58,117 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.16ms. Allocated memory is still 180.4MB. Free memory was 150.6MB in the beginning and 142.0MB in the end (delta: 8.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.82ms. Allocated memory is still 180.4MB. Free memory was 142.0MB in the beginning and 140.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.51ms. Allocated memory is still 180.4MB. Free memory was 140.4MB in the beginning and 138.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 260.86ms. Allocated memory is still 180.4MB. Free memory was 138.3MB in the beginning and 126.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6020.09ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 125.7MB in the beginning and 177.2MB in the end (delta: -51.5MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB. * Witness Printer took 88.52ms. Allocated memory is still 218.1MB. Free memory was 177.2MB in the beginning and 172.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 379 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 302 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 521 IncrementalHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 77 mSDtfsCounter, 521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 233 ConstructedInterpolants, 3 QuantifiedInterpolants, 1055 SizeOfPredicates, 13 NumberOfNonLiveVariables, 314 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 62/81 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (0 <= Y)) && ((((__int128) X * y) + y) == ((__int128) x * y))) && (X <= 100)) && (0 <= X)) || (((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (0 <= Y)) && (X <= 100)) && (0 <= X))) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-12 18:43:58,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE