./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.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 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:29:23,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:29:23,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:29:23,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:29:23,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:29:23,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:29:23,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:29:23,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:29:23,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:29:23,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:29:23,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:29:23,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:29:23,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:29:23,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:29:23,879 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:29:23,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:29:23,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:29:23,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:29:23,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:29:23,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:29:23,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:29:23,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:29:23,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:29:23,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:29:23,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:29:23,883 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:29:23,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:29:23,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:29:23,883 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:29:23,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:29:23,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:29:23,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:29:23,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:29:23,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:29:23,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:29:23,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:29:23,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc [2024-11-09 22:29:24,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:29:24,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:29:24,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:29:24,085 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:29:24,086 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:29:24,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2024-11-09 22:29:25,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:29:25,457 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:29:25,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2024-11-09 22:29:25,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2c472d6/6ac068bc2b424f4db45c821fa1f4e5a7/FLAG6b4e4cbfd [2024-11-09 22:29:25,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2c472d6/6ac068bc2b424f4db45c821fa1f4e5a7 [2024-11-09 22:29:25,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:29:25,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:29:25,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:29:25,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:29:25,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:29:25,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a13e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25, skipping insertion in model container [2024-11-09 22:29:25,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:29:25,619 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/cohendiv-ll_valuebound20.c[576,589] [2024-11-09 22:29:25,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:29:25,644 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:29:25,653 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/cohendiv-ll_valuebound20.c[576,589] [2024-11-09 22:29:25,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:29:25,671 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:29:25,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25 WrapperNode [2024-11-09 22:29:25,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:29:25,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:29:25,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:29:25,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:29:25,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,702 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-09 22:29:25,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:29:25,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:29:25,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:29:25,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:29:25,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,720 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]. [2024-11-09 22:29:25,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,722 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:29:25,725 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:29:25,725 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:29:25,725 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:29:25,726 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (1/1) ... [2024-11-09 22:29:25,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:29:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:25,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 22:29:25,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 22:29:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:29:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:29:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:29:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:29:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:29:25,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:29:25,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:29:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:29:25,836 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:29:25,838 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:29:25,940 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-09 22:29:25,940 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:29:25,951 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:29:25,955 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:29:25,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:29:25 BoogieIcfgContainer [2024-11-09 22:29:25,956 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:29:25,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:29:25,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:29:25,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:29:25,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:29:25" (1/3) ... [2024-11-09 22:29:25,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6338bea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:29:25, skipping insertion in model container [2024-11-09 22:29:25,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:29:25" (2/3) ... [2024-11-09 22:29:25,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6338bea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:29:25, skipping insertion in model container [2024-11-09 22:29:25,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:29:25" (3/3) ... [2024-11-09 22:29:25,964 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2024-11-09 22:29:25,976 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:29:25,976 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:29:26,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:29:26,023 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;@599d7c7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:29:26,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:29:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 22:29:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 22:29:26,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:26,032 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:26,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:26,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash -755755542, now seen corresponding path program 1 times [2024-11-09 22:29:26,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:26,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053004641] [2024-11-09 22:29:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:26,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:29:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:26,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:29:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:26,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:29:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:29:26,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:26,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053004641] [2024-11-09 22:29:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053004641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:29:26,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:29:26,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:29:26,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512244357] [2024-11-09 22:29:26,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:26,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:29:26,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:29:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:29:26,236 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:29:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:26,251 INFO L93 Difference]: Finished difference Result 71 states and 110 transitions. [2024-11-09 22:29:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:29:26,253 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-09 22:29:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:26,258 INFO L225 Difference]: With dead ends: 71 [2024-11-09 22:29:26,258 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 22:29:26,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:29:26,262 INFO L432 NwaCegarLoop]: 46 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, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:26,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:29:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 22:29:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-09 22:29:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 22:29:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-09 22:29:26,291 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 25 [2024-11-09 22:29:26,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:26,291 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-09 22:29:26,292 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:29:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-09 22:29:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:29:26,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:26,293 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:26,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:29:26,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:26,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:26,294 INFO L85 PathProgramCache]: Analyzing trace with hash 786452349, now seen corresponding path program 1 times [2024-11-09 22:29:26,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:26,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540760767] [2024-11-09 22:29:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:29:26,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845241458] [2024-11-09 22:29:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:26,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:26,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:26,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:29:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:26,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:29:26,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:29:26,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:29:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540760767] [2024-11-09 22:29:26,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:29:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845241458] [2024-11-09 22:29:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845241458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:29:26,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:29:26,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:29:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093626411] [2024-11-09 22:29:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:26,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:29:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:29:26,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:29:26,513 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:29:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:26,561 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-09 22:29:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:29:26,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-11-09 22:29:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:26,563 INFO L225 Difference]: With dead ends: 46 [2024-11-09 22:29:26,563 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 22:29:26,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:29:26,564 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:26,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:29:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 22:29:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-09 22:29:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 22:29:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-11-09 22:29:26,572 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 26 [2024-11-09 22:29:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:26,572 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-11-09 22:29:26,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:29:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2024-11-09 22:29:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:29:26,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:26,573 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:26,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:29:26,773 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 [2024-11-09 22:29:26,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:26,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 541604839, now seen corresponding path program 1 times [2024-11-09 22:29:26,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:26,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843061524] [2024-11-09 22:29:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:26,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:29:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435725421] [2024-11-09 22:29:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:26,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:26,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:26,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:26,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:29:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:26,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:29:26,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:29:26,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:29:26,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:26,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843061524] [2024-11-09 22:29:26,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:29:26,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435725421] [2024-11-09 22:29:26,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435725421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:29:26,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:29:26,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:29:26,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86833362] [2024-11-09 22:29:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:26,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:29:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:29:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:29:26,902 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 22:29:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:26,957 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2024-11-09 22:29:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:29:26,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 31 [2024-11-09 22:29:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:26,960 INFO L225 Difference]: With dead ends: 59 [2024-11-09 22:29:26,960 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 22:29:26,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:29:26,961 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:26,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:29:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 22:29:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-09 22:29:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 22:29:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-09 22:29:26,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 31 [2024-11-09 22:29:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:26,973 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-09 22:29:26,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 22:29:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-09 22:29:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:29:26,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:26,974 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:26,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 22:29:27,174 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 [2024-11-09 22:29:27,175 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:27,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -642853387, now seen corresponding path program 1 times [2024-11-09 22:29:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64680997] [2024-11-09 22:29:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:29:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54430691] [2024-11-09 22:29:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:27,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:27,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:27,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:29:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:29:27,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 22:29:27,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:29:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64680997] [2024-11-09 22:29:27,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:29:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54430691] [2024-11-09 22:29:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54430691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:29:27,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:29:27,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:29:27,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171875864] [2024-11-09 22:29:27,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:27,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:29:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:29:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:29:27,278 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-09 22:29:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:27,343 INFO L93 Difference]: Finished difference Result 84 states and 110 transitions. [2024-11-09 22:29:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:29:27,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 39 [2024-11-09 22:29:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:27,347 INFO L225 Difference]: With dead ends: 84 [2024-11-09 22:29:27,348 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 22:29:27,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:29:27,350 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:27,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 148 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:29:27,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 22:29:27,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2024-11-09 22:29:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 47 states have internal predecessors, (51), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 22:29:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2024-11-09 22:29:27,360 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 39 [2024-11-09 22:29:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:27,361 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2024-11-09 22:29:27,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-09 22:29:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2024-11-09 22:29:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:29:27,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:27,362 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:27,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:29:27,562 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 [2024-11-09 22:29:27,563 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:27,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1231150603, now seen corresponding path program 1 times [2024-11-09 22:29:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728533122] [2024-11-09 22:29:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:27,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:29:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:29:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:29:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:29:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:29:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:29:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:29:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:29:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728533122] [2024-11-09 22:29:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728533122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:29:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082294102] [2024-11-09 22:29:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:27,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:27,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:27,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:29:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:27,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:29:27,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:29:28,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:29:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:29:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082294102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:29:28,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:29:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-11-09 22:29:28,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579709771] [2024-11-09 22:29:28,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:29:28,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:29:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:29:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:29:28,125 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 22:29:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:28,216 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2024-11-09 22:29:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:29:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 49 [2024-11-09 22:29:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:28,219 INFO L225 Difference]: With dead ends: 83 [2024-11-09 22:29:28,219 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 22:29:28,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:29:28,220 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:28,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 218 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:29:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 22:29:28,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-11-09 22:29:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 22:29:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2024-11-09 22:29:28,238 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 49 [2024-11-09 22:29:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:28,238 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2024-11-09 22:29:28,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 22:29:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2024-11-09 22:29:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 22:29:28,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:28,239 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:28,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 22:29:28,440 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 [2024-11-09 22:29:28,440 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:28,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:28,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1609104127, now seen corresponding path program 1 times [2024-11-09 22:29:28,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:28,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442606542] [2024-11-09 22:29:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:29:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:29:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:29:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:29:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:29:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:29:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:29:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:29:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 22:29:28,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442606542] [2024-11-09 22:29:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442606542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:29:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197523049] [2024-11-09 22:29:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:28,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:28,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:28,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:28,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:29:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:28,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:29:28,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 22:29:28,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:29:28,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197523049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:29:28,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:29:28,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 22:29:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430059248] [2024-11-09 22:29:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:28,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:29:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:29:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:29:28,673 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 22:29:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:28,749 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2024-11-09 22:29:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:29:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2024-11-09 22:29:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:28,750 INFO L225 Difference]: With dead ends: 92 [2024-11-09 22:29:28,750 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 22:29:28,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:29:28,751 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 9 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:28,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 186 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:29:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 22:29:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2024-11-09 22:29:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 55 states have internal predecessors, (57), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-09 22:29:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2024-11-09 22:29:28,759 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 55 [2024-11-09 22:29:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:28,760 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2024-11-09 22:29:28,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 22:29:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2024-11-09 22:29:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 22:29:28,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:28,761 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:28,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:29:28,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:28,962 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:28,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1712533113, now seen corresponding path program 1 times [2024-11-09 22:29:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191195050] [2024-11-09 22:29:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:29:28,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568414676] [2024-11-09 22:29:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:28,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:28,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:29:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 22:29:29,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 22:29:29,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:29:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:29:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191195050] [2024-11-09 22:29:29,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:29:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568414676] [2024-11-09 22:29:29,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568414676] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:29:29,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:29:29,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-09 22:29:29,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317304668] [2024-11-09 22:29:29,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:29,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:29:29,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:29:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-09 22:29:29,445 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-09 22:29:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:29,557 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2024-11-09 22:29:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:29:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 63 [2024-11-09 22:29:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:29,560 INFO L225 Difference]: With dead ends: 91 [2024-11-09 22:29:29,560 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 22:29:29,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:29:29,561 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:29,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 125 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:29:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 22:29:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-09 22:29:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 57 states have internal predecessors, (59), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-09 22:29:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2024-11-09 22:29:29,584 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 63 [2024-11-09 22:29:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:29,584 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-11-09 22:29:29,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-09 22:29:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2024-11-09 22:29:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 22:29:29,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:29,587 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:29,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 22:29:29,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:29,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:29,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2052429855, now seen corresponding path program 1 times [2024-11-09 22:29:29,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:29,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025831143] [2024-11-09 22:29:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:29,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:29:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:29:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:29:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:29:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:29:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:29:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:29:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:29:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 22:29:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-09 22:29:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 22:29:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 22:29:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 22:29:29,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:29,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025831143] [2024-11-09 22:29:29,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025831143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:29:29,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635814594] [2024-11-09 22:29:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:29,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:29,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:29,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:29:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:29,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:29:29,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 35 proven. 29 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 22:29:30,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:29:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 22:29:30,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635814594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:29:30,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:29:30,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2024-11-09 22:29:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465419494] [2024-11-09 22:29:30,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:29:30,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:29:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:29:30,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:29:30,112 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 22:29:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:30,215 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2024-11-09 22:29:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:29:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 79 [2024-11-09 22:29:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:30,216 INFO L225 Difference]: With dead ends: 98 [2024-11-09 22:29:30,216 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 22:29:30,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:29:30,217 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:30,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 248 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:29:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 22:29:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2024-11-09 22:29:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 22:29:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2024-11-09 22:29:30,226 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 79 [2024-11-09 22:29:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:30,226 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2024-11-09 22:29:30,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 22:29:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2024-11-09 22:29:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 22:29:30,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:30,227 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:30,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 22:29:30,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:30,428 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:30,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1151635349, now seen corresponding path program 2 times [2024-11-09 22:29:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841420397] [2024-11-09 22:29:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:29:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:29:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:29:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:29:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:29:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:29:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:29:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:29:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 22:29:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-09 22:29:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 22:29:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:29:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 22:29:30,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841420397] [2024-11-09 22:29:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841420397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:29:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426425258] [2024-11-09 22:29:30,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:29:30,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:30,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:30,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:29:30,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:29:30,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:29:30,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 22:29:30,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 22:29:30,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:29:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426425258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:29:30,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:29:30,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-09 22:29:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598085538] [2024-11-09 22:29:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:29:30,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:29:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:29:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:29:30,609 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 22:29:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:30,693 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2024-11-09 22:29:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:29:30,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 81 [2024-11-09 22:29:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:30,694 INFO L225 Difference]: With dead ends: 124 [2024-11-09 22:29:30,694 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 22:29:30,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:29:30,695 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:30,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 138 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:29:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 22:29:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-09 22:29:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 22:29:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-09 22:29:30,705 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 81 [2024-11-09 22:29:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:30,705 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-09 22:29:30,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 22:29:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-09 22:29:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 22:29:30,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:29:30,708 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:30,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 22:29:30,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 22:29:30,908 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:29:30,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:29:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1211098507, now seen corresponding path program 1 times [2024-11-09 22:29:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:29:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268635944] [2024-11-09 22:29:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:29:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:29:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:29:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:29:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:29:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:29:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:29:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:29:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:29:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 22:29:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-09 22:29:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 22:29:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 22:29:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-09 22:29:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-09 22:29:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-09 22:29:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-09 22:29:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-09 22:29:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:29:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268635944] [2024-11-09 22:29:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268635944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:29:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438414695] [2024-11-09 22:29:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:29:31,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:29:31,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:29:31,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:29:31,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:29:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:29:31,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:29:31,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:29:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-09 22:29:31,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:29:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-09 22:29:31,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438414695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:29:31,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:29:31,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-09 22:29:31,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051928376] [2024-11-09 22:29:31,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:29:31,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:29:31,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:29:31,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:29:31,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:29:31,394 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-09 22:29:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:29:31,906 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2024-11-09 22:29:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 22:29:31,907 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 105 [2024-11-09 22:29:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:29:31,907 INFO L225 Difference]: With dead ends: 156 [2024-11-09 22:29:31,907 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 22:29:31,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 22:29:31,909 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 67 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:29:31,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 605 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:29:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 22:29:31,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 22:29:31,910 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) [2024-11-09 22:29:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 22:29:31,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2024-11-09 22:29:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:29:31,910 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 22:29:31,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-09 22:29:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 22:29:31,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 22:29:31,914 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:29:31,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 22:29:32,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 22:29:32,117 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:29:32,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 22:29:33,340 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 22:29:33,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:29:33 BoogieIcfgContainer [2024-11-09 22:29:33,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 22:29:33,356 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 22:29:33,356 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 22:29:33,356 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 22:29:33,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:29:25" (3/4) ... [2024-11-09 22:29:33,358 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 22:29:33,361 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-09 22:29:33,361 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 22:29:33,364 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-09 22:29:33,364 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 22:29:33,365 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 22:29:33,365 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 22:29:33,425 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 22:29:33,427 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 22:29:33,427 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 22:29:33,427 INFO L158 Benchmark]: Toolchain (without parser) took 7952.67ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 166.1MB in the beginning and 116.1MB in the end (delta: 50.0MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,427 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:29:33,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.71ms. Allocated memory is still 197.1MB. Free memory was 166.1MB in the beginning and 152.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.78ms. Allocated memory is still 197.1MB. Free memory was 152.6MB in the beginning and 151.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,428 INFO L158 Benchmark]: Boogie Preprocessor took 22.02ms. Allocated memory is still 197.1MB. Free memory was 151.6MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,428 INFO L158 Benchmark]: IcfgBuilder took 230.62ms. Allocated memory is still 197.1MB. Free memory was 149.5MB in the beginning and 136.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,428 INFO L158 Benchmark]: TraceAbstraction took 7397.90ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 136.9MB in the beginning and 121.4MB in the end (delta: 15.5MB). Peak memory consumption was 107.2MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,429 INFO L158 Benchmark]: Witness Printer took 71.16ms. Allocated memory is still 237.0MB. Free memory was 121.4MB in the beginning and 116.1MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 22:29:33,430 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 134.2MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.71ms. Allocated memory is still 197.1MB. Free memory was 166.1MB in the beginning and 152.6MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.78ms. Allocated memory is still 197.1MB. Free memory was 152.6MB in the beginning and 151.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.02ms. Allocated memory is still 197.1MB. Free memory was 151.6MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 230.62ms. Allocated memory is still 197.1MB. Free memory was 149.5MB in the beginning and 136.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7397.90ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 136.9MB in the beginning and 121.4MB in the end (delta: 15.5MB). Peak memory consumption was 107.2MB. Max. memory is 16.1GB. * Witness Printer took 71.16ms. Allocated memory is still 237.0MB. Free memory was 121.4MB in the beginning and 116.1MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: 17]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 195 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 1989 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1586 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 801 IncrementalHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 403 mSDtfsCounter, 801 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1003 GetRequests, 888 SyntacticMatches, 8 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=7, InterpolantAutomatonStates: 71, 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, 10 MinimizatonAttempts, 48 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1081 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1199 ConstructedInterpolants, 0 QuantifiedInterpolants, 2717 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1189 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 2395/2514 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: 47]: Location Invariant Derived location invariant: null - InvariantResult [Line: 38]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-09 22:29:33,443 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 Result: TRUE