./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_valuebound5.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_valuebound5.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 a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:43:57,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:43:57,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:43:57,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:43:57,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:43:57,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:43:57,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:43:57,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:43:57,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:43:57,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:43:57,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:43:57,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:43:57,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:43:57,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:43:57,563 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:43:57,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:43:57,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:43:57,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:43:57,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:43:57,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:43:57,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:43:57,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:43:57,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:43:57,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:43:57,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:43:57,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:43:57,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:43:57,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:43:57,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:43:57,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:43:57,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:43:57,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:43:57,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:43:57,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:43:57,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:43:57,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:43:57,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:43:57,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:43:57,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:43:57,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:43:57,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:43:57,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:43:57,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 [2024-10-12 18:43:57,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:43:57,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:43:57,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:43:57,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:43:57,758 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:43:57,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2024-10-12 18:43:58,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:43:59,145 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:43:59,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2024-10-12 18:43:59,155 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb272e97/0ab698a074d1416d85c59402cbb920e4/FLAGba105ce64 [2024-10-12 18:43:59,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb272e97/0ab698a074d1416d85c59402cbb920e4 [2024-10-12 18:43:59,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:43:59,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:43:59,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:43:59,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:43:59,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:43:59,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171b41f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59, skipping insertion in model container [2024-10-12 18:43:59,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:43:59,357 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_valuebound5.c[597,610] [2024-10-12 18:43:59,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:43:59,401 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:43:59,409 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_valuebound5.c[597,610] [2024-10-12 18:43:59,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:43:59,434 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:43:59,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59 WrapperNode [2024-10-12 18:43:59,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:43:59,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:43:59,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:43:59,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:43:59,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,453 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2024-10-12 18:43:59,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:43:59,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:43:59,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:43:59,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:43:59,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,468 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 18:43:59,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:43:59,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:43:59,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:43:59,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:43:59,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (1/1) ... [2024-10-12 18:43:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:43:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:43:59,499 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 18:43:59,501 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 18:43:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:43:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-12 18:43:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-12 18:43:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:43:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:43:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:43:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 18:43:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 18:43:59,583 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:43:59,584 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:43:59,665 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 18:43:59,665 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:43:59,679 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:43:59,679 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 18:43:59,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:43:59 BoogieIcfgContainer [2024-10-12 18:43:59,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:43:59,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:43:59,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:43:59,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:43:59,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:43:59" (1/3) ... [2024-10-12 18:43:59,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b9a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:43:59, skipping insertion in model container [2024-10-12 18:43:59,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:43:59" (2/3) ... [2024-10-12 18:43:59,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b9a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:43:59, skipping insertion in model container [2024-10-12 18:43:59,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:43:59" (3/3) ... [2024-10-12 18:43:59,685 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound5.c [2024-10-12 18:43:59,696 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:43:59,696 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:43:59,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:43:59,744 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;@3487d755, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:43:59,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:43:59,747 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 18:43:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:43:59,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:59,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:43:59,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:59,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash 866122637, now seen corresponding path program 1 times [2024-10-12 18:43:59,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:59,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891491804] [2024-10-12 18:43:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:43:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:59,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:43:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:59,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:43:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:43:59,885 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 18:43:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:43:59,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891491804] [2024-10-12 18:43:59,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891491804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:43:59,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:43:59,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:43:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061433056] [2024-10-12 18:43:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:43:59,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:43:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:43:59,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:43:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:43:59,908 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 18:43:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:43:59,924 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2024-10-12 18:43:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:43:59,925 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 18:43:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:43:59,930 INFO L225 Difference]: With dead ends: 46 [2024-10-12 18:43:59,930 INFO L226 Difference]: Without dead ends: 22 [2024-10-12 18:43:59,932 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 18:43:59,934 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 18:43:59,934 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 18:43:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-12 18:43:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-12 18:43:59,967 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 18:43:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-10-12 18:43:59,970 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2024-10-12 18:43:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:43:59,970 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-10-12 18:43:59,970 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 18:43:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-10-12 18:43:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:43:59,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:43:59,973 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:43:59,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:43:59,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:43:59,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:43:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash 266317329, now seen corresponding path program 1 times [2024-10-12 18:43:59,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:43:59,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412496922] [2024-10-12 18:43:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:43:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:00,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967361287] [2024-10-12 18:44:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:00,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:00,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:00,053 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 18:44:00,054 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 18:44:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:00,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:44:00,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:00,288 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 18:44:00,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:44:00,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412496922] [2024-10-12 18:44:00,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967361287] [2024-10-12 18:44:00,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967361287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:00,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:00,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 18:44:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471443301] [2024-10-12 18:44:00,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:00,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:44:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:44:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:44:00,293 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 18:44:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:00,388 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-10-12 18:44:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:44:00,388 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 18:44:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:00,390 INFO L225 Difference]: With dead ends: 34 [2024-10-12 18:44:00,391 INFO L226 Difference]: Without dead ends: 32 [2024-10-12 18:44:00,391 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 18:44:00,393 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 18:44:00,393 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 18:44:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-12 18:44:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-10-12 18:44:00,403 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 18:44:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-10-12 18:44:00,405 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2024-10-12 18:44:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:00,406 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-10-12 18:44:00,406 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 18:44:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-10-12 18:44:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 18:44:00,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:00,407 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 18:44:00,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:44:00,611 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 18:44:00,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:00,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash -125875189, now seen corresponding path program 1 times [2024-10-12 18:44:00,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:00,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122785810] [2024-10-12 18:44:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:00,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:44:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:00,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:44:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:00,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 18:44:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:00,822 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 18:44:00,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:00,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122785810] [2024-10-12 18:44:00,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122785810] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:00,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437279525] [2024-10-12 18:44:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:00,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:00,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:00,825 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 18:44:00,826 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 18:44:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:00,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:44:00,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:00,991 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 18:44:00,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:44:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437279525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:44:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-12 18:44:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896595554] [2024-10-12 18:44:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:00,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:44:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:44:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:44:00,995 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 18:44:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:01,063 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-10-12 18:44:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:44:01,064 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 18:44:01,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:01,065 INFO L225 Difference]: With dead ends: 38 [2024-10-12 18:44:01,065 INFO L226 Difference]: Without dead ends: 30 [2024-10-12 18:44:01,065 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 18:44:01,066 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, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:01,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-12 18:44:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-10-12 18:44:01,075 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 18:44:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-10-12 18:44:01,075 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2024-10-12 18:44:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:01,076 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-10-12 18:44:01,076 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 18:44:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-10-12 18:44:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 18:44:01,076 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:01,076 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 18:44:01,101 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 18:44:01,277 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 18:44:01,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:01,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1056709002, now seen corresponding path program 1 times [2024-10-12 18:44:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:01,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656605251] [2024-10-12 18:44:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144268838] [2024-10-12 18:44:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:01,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:01,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:01,299 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 18:44:01,300 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 18:44:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:01,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 18:44:01,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:01,456 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 18:44:01,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:01,657 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 18:44:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656605251] [2024-10-12 18:44:01,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144268838] [2024-10-12 18:44:01,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144268838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:44:01,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:44:01,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2024-10-12 18:44:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130830913] [2024-10-12 18:44:01,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:01,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 18:44:01,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 18:44:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:44:01,660 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 18:44:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:01,872 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2024-10-12 18:44:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 18:44:01,873 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 18:44:01,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:01,873 INFO L225 Difference]: With dead ends: 44 [2024-10-12 18:44:01,874 INFO L226 Difference]: Without dead ends: 40 [2024-10-12 18:44:01,874 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 18:44:01,875 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 18:44:01,875 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 18:44:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-12 18:44:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2024-10-12 18:44:01,879 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 18:44:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-10-12 18:44:01,880 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2024-10-12 18:44:01,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:01,880 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-10-12 18:44:01,880 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 18:44:01,880 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-10-12 18:44:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:44:01,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:01,881 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 18:44:01,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:44:02,085 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 18:44:02,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:02,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1266497530, now seen corresponding path program 1 times [2024-10-12 18:44:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:02,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795785338] [2024-10-12 18:44:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:02,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:02,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 18:44:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:02,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 18:44:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:02,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 18:44:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:02,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:44:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:02,222 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 18:44:02,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:02,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795785338] [2024-10-12 18:44:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795785338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:02,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098579189] [2024-10-12 18:44:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:02,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:02,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:02,230 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 18:44:02,232 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 18:44:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:02,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 18:44:02,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:02,533 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 18:44:02,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:02,954 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 18:44:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098579189] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:44:02,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:44:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2024-10-12 18:44:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541469665] [2024-10-12 18:44:02,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:02,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 18:44:02,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 18:44:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-10-12 18:44:02,956 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 18:44:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:03,976 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-10-12 18:44:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 18:44:03,977 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 18:44:03,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:03,977 INFO L225 Difference]: With dead ends: 47 [2024-10-12 18:44:03,977 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 18:44:03,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=388, Invalid=1682, Unknown=0, NotChecked=0, Total=2070 [2024-10-12 18:44:03,979 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 45 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:03,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 105 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:44:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 18:44:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 18:44:03,980 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 18:44:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 18:44:03,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2024-10-12 18:44:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:03,980 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 18:44:03,980 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 18:44:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 18:44:03,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 18:44:03,983 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 18:44:04,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:44:04,186 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 18:44:04,189 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-12 18:44:04,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 18:44:04,572 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 18:44:04,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:44:04 BoogieIcfgContainer [2024-10-12 18:44:04,590 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 18:44:04,591 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 18:44:04,591 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 18:44:04,591 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 18:44:04,592 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:43:59" (3/4) ... [2024-10-12 18:44:04,593 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 18:44:04,596 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-10-12 18:44:04,596 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-12 18:44:04,598 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-12 18:44:04,598 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 18:44:04,598 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 18:44:04,598 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 18:44:04,651 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 18:44:04,652 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 18:44:04,652 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 18:44:04,652 INFO L158 Benchmark]: Toolchain (without parser) took 5471.02ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 84.0MB in the beginning and 164.2MB in the end (delta: -80.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:44:04,652 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 107.1MB in the end (delta: 181.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:44:04,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.65ms. Allocated memory is still 153.1MB. Free memory was 83.8MB in the beginning and 125.8MB in the end (delta: -41.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-12 18:44:04,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.65ms. Allocated memory is still 153.1MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 18:44:04,653 INFO L158 Benchmark]: Boogie Preprocessor took 19.34ms. Allocated memory is still 153.1MB. Free memory was 123.7MB in the beginning and 122.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:44:04,653 INFO L158 Benchmark]: RCFGBuilder took 205.72ms. Allocated memory is still 153.1MB. Free memory was 122.5MB in the beginning and 110.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 18:44:04,653 INFO L158 Benchmark]: TraceAbstraction took 4909.63ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 109.0MB in the beginning and 169.4MB in the end (delta: -60.5MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. [2024-10-12 18:44:04,654 INFO L158 Benchmark]: Witness Printer took 61.02ms. Allocated memory is still 207.6MB. Free memory was 169.4MB in the beginning and 164.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 18:44:04,655 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 107.1MB in the end (delta: 181.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.65ms. Allocated memory is still 153.1MB. Free memory was 83.8MB in the beginning and 125.8MB in the end (delta: -41.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.65ms. Allocated memory is still 153.1MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.34ms. Allocated memory is still 153.1MB. Free memory was 123.7MB in the beginning and 122.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.72ms. Allocated memory is still 153.1MB. Free memory was 122.5MB in the beginning and 110.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4909.63ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 109.0MB in the beginning and 169.4MB in the end (delta: -60.5MB). Peak memory consumption was 105.2MB. Max. memory is 16.1GB. * Witness Printer took 61.02ms. Allocated memory is still 207.6MB. Free memory was 169.4MB in the beginning and 164.2MB 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.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: 4.5s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 378 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 301 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 523 IncrementalHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 77 mSDtfsCounter, 523 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 1.7s 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, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 233 ConstructedInterpolants, 3 QuantifiedInterpolants, 1110 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: ((((((Y <= 5) && ((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y)))) && (X <= 5)) && (0 <= Y)) && (0 <= X)) && (((((__int128) X * y) + y) == ((__int128) x * y)) || (x < ((long long) X + 1)))) - 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 18:44:04,671 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