./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.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 0af3ae3e1b18402d7b766cf1943edddd3bf558b5da3e0e85ca5f8b1f74f72a1e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:18:55,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:18:55,680 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:18:55,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:18:55,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:18:55,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:18:55,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:18:55,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:18:55,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:18:55,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:18:55,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:18:55,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:18:55,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:18:55,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:18:55,724 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:18:55,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:18:55,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:18:55,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:18:55,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:18:55,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:18:55,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:18:55,726 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:18:55,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:18:55,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:18:55,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:18:55,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:18:55,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:18:55,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:18:55,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:18:55,728 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:18:55,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:18:55,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:18:55,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:18:55,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:18:55,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:18:55,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:18:55,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0af3ae3e1b18402d7b766cf1943edddd3bf558b5da3e0e85ca5f8b1f74f72a1e [2024-11-22 01:18:55,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:18:55,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:18:55,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:18:55,962 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:18:55,963 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:18:55,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2024-11-22 01:18:57,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:18:57,451 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:18:57,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2024-11-22 01:18:57,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4169089d/585ce6aad2c74946854e05a3fbc811af/FLAGdc5fd8841 [2024-11-22 01:18:57,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4169089d/585ce6aad2c74946854e05a3fbc811af [2024-11-22 01:18:57,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:18:57,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:18:57,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:18:57,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:18:57,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:18:57,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9ea14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57, skipping insertion in model container [2024-11-22 01:18:57,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,502 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:18:57,631 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2024-11-22 01:18:57,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:18:57,656 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:18:57,668 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2024-11-22 01:18:57,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:18:57,690 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:18:57,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57 WrapperNode [2024-11-22 01:18:57,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:18:57,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:18:57,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:18:57,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:18:57,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,725 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2024-11-22 01:18:57,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:18:57,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:18:57,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:18:57,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:18:57,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,753 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]. [2024-11-22 01:18:57,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:18:57,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:18:57,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:18:57,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:18:57,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (1/1) ... [2024-11-22 01:18:57,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:18:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:18:57,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 01:18:57,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 01:18:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:18:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 01:18:57,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 01:18:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:18:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:18:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:18:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 01:18:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 01:18:57,918 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:18:57,921 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:18:58,091 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-22 01:18:58,091 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:18:58,104 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:18:58,105 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:18:58,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:18:58 BoogieIcfgContainer [2024-11-22 01:18:58,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:18:58,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:18:58,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:18:58,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:18:58,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:18:57" (1/3) ... [2024-11-22 01:18:58,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce77c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:18:58, skipping insertion in model container [2024-11-22 01:18:58,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:57" (2/3) ... [2024-11-22 01:18:58,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce77c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:18:58, skipping insertion in model container [2024-11-22 01:18:58,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:18:58" (3/3) ... [2024-11-22 01:18:58,115 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound1.c [2024-11-22 01:18:58,131 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:18:58,131 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:18:58,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:18:58,199 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;@39c9188c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:18:58,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:18:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-22 01:18:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-22 01:18:58,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:18:58,211 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:18:58,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:18:58,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:18:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1165920622, now seen corresponding path program 1 times [2024-11-22 01:18:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:18:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955982079] [2024-11-22 01:18:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:18:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:18:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 01:18:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:18:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955982079] [2024-11-22 01:18:58,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955982079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:18:58,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075230486] [2024-11-22 01:18:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:58,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:18:58,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:18:58,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:18:58,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:18:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:18:58,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 01:18:58,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:18:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 01:18:58,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:18:58,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075230486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:18:58,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:18:58,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 01:18:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401619289] [2024-11-22 01:18:58,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:18:58,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:18:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:18:58,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:18:58,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:18:58,462 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-22 01:18:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:18:58,505 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2024-11-22 01:18:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:18:58,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 [2024-11-22 01:18:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:18:58,515 INFO L225 Difference]: With dead ends: 57 [2024-11-22 01:18:58,516 INFO L226 Difference]: Without dead ends: 26 [2024-11-22 01:18:58,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:18:58,521 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:18:58,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:18:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-22 01:18:58,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-22 01:18:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 01:18:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-11-22 01:18:58,574 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 18 [2024-11-22 01:18:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:18:58,574 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-11-22 01:18:58,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-22 01:18:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-11-22 01:18:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 01:18:58,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:18:58,576 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:18:58,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:18:58,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 01:18:58,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:18:58,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:18:58,782 INFO L85 PathProgramCache]: Analyzing trace with hash -542319922, now seen corresponding path program 1 times [2024-11-22 01:18:58,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:18:58,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340061109] [2024-11-22 01:18:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:18:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:18:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:18:58,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:18:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340061109] [2024-11-22 01:18:58,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340061109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:18:58,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:18:58,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:18:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991126042] [2024-11-22 01:18:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:18:58,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:18:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:18:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:18:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:18:58,899 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-22 01:18:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:18:58,922 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-11-22 01:18:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:18:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 19 [2024-11-22 01:18:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:18:58,925 INFO L225 Difference]: With dead ends: 38 [2024-11-22 01:18:58,925 INFO L226 Difference]: Without dead ends: 28 [2024-11-22 01:18:58,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:18:58,926 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:18:58,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:18:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-22 01:18:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-22 01:18:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 01:18:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-22 01:18:58,933 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 19 [2024-11-22 01:18:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:18:58,934 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-22 01:18:58,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-22 01:18:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-22 01:18:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 01:18:58,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:18:58,935 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:18:58,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:18:58,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:18:58,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:18:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash -540651626, now seen corresponding path program 1 times [2024-11-22 01:18:58,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:18:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794900641] [2024-11-22 01:18:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:58,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:18:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:18:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884333326] [2024-11-22 01:18:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:58,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:18:58,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:18:58,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:18:58,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:18:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:18:59,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:18:59,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:18:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:18:59,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:18:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:18:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794900641] [2024-11-22 01:18:59,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:18:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884333326] [2024-11-22 01:18:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884333326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:18:59,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:18:59,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:18:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141605010] [2024-11-22 01:18:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:18:59,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:18:59,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:18:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:18:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:18:59,129 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-22 01:18:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:18:59,210 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2024-11-22 01:18:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:18:59,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 19 [2024-11-22 01:18:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:18:59,212 INFO L225 Difference]: With dead ends: 45 [2024-11-22 01:18:59,212 INFO L226 Difference]: Without dead ends: 43 [2024-11-22 01:18:59,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:18:59,214 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:18:59,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 118 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:18:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-22 01:18:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-22 01:18:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-22 01:18:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2024-11-22 01:18:59,230 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 19 [2024-11-22 01:18:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:18:59,230 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2024-11-22 01:18:59,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-22 01:18:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2024-11-22 01:18:59,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 01:18:59,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:18:59,232 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] [2024-11-22 01:18:59,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 01:18:59,435 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 [2024-11-22 01:18:59,436 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:18:59,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:18:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -276555716, now seen corresponding path program 1 times [2024-11-22 01:18:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:18:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506298459] [2024-11-22 01:18:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:18:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:18:59,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558573339] [2024-11-22 01:18:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:59,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:18:59,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:18:59,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:18:59,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:18:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:18:59,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:18:59,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:18:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:18:59,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:18:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:18:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506298459] [2024-11-22 01:18:59,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:18:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558573339] [2024-11-22 01:18:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558573339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:18:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:18:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:18:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144836833] [2024-11-22 01:18:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:18:59,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:18:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:18:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:18:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:18:59,603 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 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) [2024-11-22 01:18:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:18:59,665 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-11-22 01:18:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:18:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 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 24 [2024-11-22 01:18:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:18:59,667 INFO L225 Difference]: With dead ends: 49 [2024-11-22 01:18:59,668 INFO L226 Difference]: Without dead ends: 47 [2024-11-22 01:18:59,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:18:59,669 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:18:59,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 126 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:18:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-22 01:18:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-22 01:18:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-22 01:18:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-11-22 01:18:59,686 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 24 [2024-11-22 01:18:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:18:59,686 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-11-22 01:18:59,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 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) [2024-11-22 01:18:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-11-22 01:18:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 01:18:59,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:18:59,688 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:18:59,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:18:59,892 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 [2024-11-22 01:18:59,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:18:59,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:18:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1836785898, now seen corresponding path program 1 times [2024-11-22 01:18:59,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:18:59,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805957092] [2024-11-22 01:18:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:59,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:18:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:18:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54278745] [2024-11-22 01:18:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:18:59,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:18:59,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:18:59,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:18:59,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:18:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:18:59,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 01:18:59,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:19:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 01:19:00,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:19:00,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:19:00,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805957092] [2024-11-22 01:19:00,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 01:19:00,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54278745] [2024-11-22 01:19:00,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54278745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:19:00,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:19:00,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:19:00,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780424072] [2024-11-22 01:19:00,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:19:00,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:19:00,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:19:00,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:19:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:19:00,035 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 01:19:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:19:00,096 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2024-11-22 01:19:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:19:00,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-22 01:19:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:19:00,100 INFO L225 Difference]: With dead ends: 71 [2024-11-22 01:19:00,100 INFO L226 Difference]: Without dead ends: 67 [2024-11-22 01:19:00,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:19:00,101 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:19:00,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:19:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-22 01:19:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-22 01:19:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 39 states have internal predecessors, (47), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-22 01:19:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2024-11-22 01:19:00,112 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 29 [2024-11-22 01:19:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:19:00,113 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2024-11-22 01:19:00,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 01:19:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2024-11-22 01:19:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-22 01:19:00,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:19:00,114 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:19:00,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:19:00,314 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 [2024-11-22 01:19:00,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:19:00,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:19:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1071030291, now seen corresponding path program 1 times [2024-11-22 01:19:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:19:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52317097] [2024-11-22 01:19:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:19:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:19:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:19:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 01:19:00,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:19:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52317097] [2024-11-22 01:19:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52317097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:19:00,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:19:00,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:19:00,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206109502] [2024-11-22 01:19:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:19:00,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:19:00,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:19:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:19:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:19:00,474 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 01:19:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:19:00,539 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2024-11-22 01:19:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:19:00,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-11-22 01:19:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:19:00,541 INFO L225 Difference]: With dead ends: 83 [2024-11-22 01:19:00,542 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 01:19:00,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:19:00,544 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:19:00,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:19:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 01:19:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2024-11-22 01:19:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 45 states have internal predecessors, (50), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 01:19:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2024-11-22 01:19:00,569 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 35 [2024-11-22 01:19:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:19:00,570 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2024-11-22 01:19:00,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 01:19:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2024-11-22 01:19:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-22 01:19:00,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:19:00,571 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:19:00,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 01:19:00,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:19:00,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:19:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1689492770, now seen corresponding path program 1 times [2024-11-22 01:19:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:19:00,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636473344] [2024-11-22 01:19:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:19:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:19:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 01:19:00,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537914352] [2024-11-22 01:19:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:19:00,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:19:00,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:19:00,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:19:00,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:19:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 01:19:00,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 01:19:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 01:19:00,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 01:19:00,672 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 01:19:00,673 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:19:00,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:19:00,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:19:00,882 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:19:00,914 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:19:00,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:19:00 BoogieIcfgContainer [2024-11-22 01:19:00,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:19:00,916 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:19:00,916 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:19:00,916 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:19:00,917 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:18:58" (3/4) ... [2024-11-22 01:19:00,920 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-22 01:19:00,963 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:19:00,963 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:19:00,963 INFO L158 Benchmark]: Toolchain (without parser) took 3485.65ms. Allocated memory was 176.2MB in the beginning and 230.7MB in the end (delta: 54.5MB). Free memory was 121.7MB in the beginning and 86.4MB in the end (delta: 35.3MB). Peak memory consumption was 91.5MB. Max. memory is 16.1GB. [2024-11-22 01:19:00,964 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:19:00,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.92ms. Allocated memory is still 176.2MB. Free memory was 121.7MB in the beginning and 108.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 01:19:00,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.00ms. Allocated memory is still 176.2MB. Free memory was 108.6MB in the beginning and 107.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:19:00,964 INFO L158 Benchmark]: Boogie Preprocessor took 36.14ms. Allocated memory is still 176.2MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:19:00,964 INFO L158 Benchmark]: RCFGBuilder took 341.25ms. Allocated memory is still 176.2MB. Free memory was 105.6MB in the beginning and 93.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 01:19:00,965 INFO L158 Benchmark]: TraceAbstraction took 2806.68ms. Allocated memory was 176.2MB in the beginning and 230.7MB in the end (delta: 54.5MB). Free memory was 92.4MB in the beginning and 89.6MB in the end (delta: 2.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-11-22 01:19:00,965 INFO L158 Benchmark]: Witness Printer took 46.82ms. Allocated memory is still 230.7MB. Free memory was 89.6MB in the beginning and 86.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:19:00,966 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.92ms. Allocated memory is still 176.2MB. Free memory was 121.7MB in the beginning and 108.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.00ms. Allocated memory is still 176.2MB. Free memory was 108.6MB in the beginning and 107.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.14ms. Allocated memory is still 176.2MB. Free memory was 107.1MB in the beginning and 105.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 341.25ms. Allocated memory is still 176.2MB. Free memory was 105.6MB in the beginning and 93.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2806.68ms. Allocated memory was 176.2MB in the beginning and 230.7MB in the end (delta: 54.5MB). Free memory was 92.4MB in the beginning and 89.6MB in the end (delta: 2.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Witness Printer took 46.82ms. Allocated memory is still 230.7MB. Free memory was 89.6MB in the beginning and 86.4MB in the end (delta: 3.1MB). 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=3, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=3, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=3, b=1, counter=0, p=1, q=0, r=0, s=1, x=3, y=1] [L34] EXPR counter++ VAL [a=3, b=1, counter=1, p=1, q=0, r=0, s=1, x=3, y=1] [L34] COND TRUE counter++<1 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=3, b=1, counter=1, p=1, q=0, r=0, s=1, x=3, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=3, b=1, counter=1, p=1, q=0, r=0, s=1, x=3, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=1, counter=1, p=1, q=0, r=0, s=1, x=3, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=3, b=1, counter=1, p=1, q=0, r=0, s=1, x=3, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=2, b=1, counter=1, p=1, q=0, r=-1, s=1, x=3, y=1] [L34] EXPR counter++ VAL [a=2, b=1, counter=2, p=1, q=0, r=-1, s=1, x=3, y=1] [L34] COND FALSE !(counter++<1) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=2] [L11] COND TRUE !(cond) VAL [\old(cond)=0, counter=2] [L13] reach_error() VAL [\old(cond)=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 616 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 406 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 139 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 210 mSDtfsCounter, 139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=6, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 3 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 54/56 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-22 01:19:00,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE