./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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_unwindbound100.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 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:58:03,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:58:03,861 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:58:03,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:58:03,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:58:03,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:58:03,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:58:03,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:58:03,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:58:03,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:58:03,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:58:03,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:58:03,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:58:03,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:58:03,900 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:58:03,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:58:03,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:58:03,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:58:03,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:58:03,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:58:03,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:58:03,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:58:03,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:58:03,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:58:03,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:58:03,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:58:03,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:58:03,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:58:03,906 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:58:03,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:58:03,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:58:03,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:58:03,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:58:03,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:58:03,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:58:03,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:58:03,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:58:03,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:58:03,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:58:03,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:58:03,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:58:03,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:58:03,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e [2024-11-16 06:58:04,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:58:04,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:58:04,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:58:04,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:58:04,166 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:58:04,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2024-11-16 06:58:05,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:58:05,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:58:05,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2024-11-16 06:58:05,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d334d1e/70ba5b491d3b466b905d46dde4562b98/FLAG4f84c4c36 [2024-11-16 06:58:05,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41d334d1e/70ba5b491d3b466b905d46dde4562b98 [2024-11-16 06:58:05,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:58:05,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:58:05,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:58:05,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:58:05,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:58:05,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61dd96c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05, skipping insertion in model container [2024-11-16 06:58:05,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:58:05,728 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_unwindbound100.c[576,589] [2024-11-16 06:58:05,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:58:05,760 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:58:05,774 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_unwindbound100.c[576,589] [2024-11-16 06:58:05,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:58:05,802 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:58:05,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05 WrapperNode [2024-11-16 06:58:05,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:58:05,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:58:05,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:58:05,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:58:05,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,826 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-16 06:58:05,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:58:05,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:58:05,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:58:05,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:58:05,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,856 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]. [2024-11-16 06:58:05,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,861 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:58:05,865 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:58:05,865 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:58:05,865 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:58:05,866 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (1/1) ... [2024-11-16 06:58:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:58:05,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:05,899 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) [2024-11-16 06:58:05,901 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 [2024-11-16 06:58:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:58:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:58:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:58:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:58:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 06:58:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 06:58:06,023 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:58:06,028 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:58:06,183 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-16 06:58:06,184 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:58:06,198 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:58:06,198 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:58:06,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:58:06 BoogieIcfgContainer [2024-11-16 06:58:06,199 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:58:06,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:58:06,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:58:06,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:58:06,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:58:05" (1/3) ... [2024-11-16 06:58:06,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c4911c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:58:06, skipping insertion in model container [2024-11-16 06:58:06,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:58:05" (2/3) ... [2024-11-16 06:58:06,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c4911c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:58:06, skipping insertion in model container [2024-11-16 06:58:06,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:58:06" (3/3) ... [2024-11-16 06:58:06,205 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound100.c [2024-11-16 06:58:06,218 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:58:06,218 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:58:06,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:58:06,267 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;@62d6cbbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:58:06,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:58:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 06:58:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 06:58:06,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:06,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:06,277 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:06,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:06,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2109579990, now seen corresponding path program 1 times [2024-11-16 06:58:06,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:06,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591519413] [2024-11-16 06:58:06,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:06,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:58:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591519413] [2024-11-16 06:58:06,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591519413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:06,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:58:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061459031] [2024-11-16 06:58:06,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:06,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:58:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:58:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:58:06,418 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:06,436 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2024-11-16 06:58:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:58:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-16 06:58:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:06,444 INFO L225 Difference]: With dead ends: 57 [2024-11-16 06:58:06,444 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 06:58:06,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:58:06,449 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:06,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 06:58:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-16 06:58:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 06:58:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-11-16 06:58:06,476 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 10 [2024-11-16 06:58:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:06,476 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-11-16 06:58:06,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-11-16 06:58:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:58:06,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:06,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:06,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:58:06,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:06,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 142750984, now seen corresponding path program 1 times [2024-11-16 06:58:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:06,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195066893] [2024-11-16 06:58:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:58:06,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:06,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195066893] [2024-11-16 06:58:06,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195066893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:06,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:06,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:58:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774168963] [2024-11-16 06:58:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:06,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:58:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:58:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:58:06,562 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:06,585 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-16 06:58:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:58:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:58:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:06,588 INFO L225 Difference]: With dead ends: 36 [2024-11-16 06:58:06,588 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 06:58:06,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:58:06,589 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:06,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 06:58:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 06:58:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 06:58:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-16 06:58:06,597 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 11 [2024-11-16 06:58:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:06,597 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-16 06:58:06,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-16 06:58:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:58:06,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:06,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:06,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:58:06,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:06,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 182462387, now seen corresponding path program 1 times [2024-11-16 06:58:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:06,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405628316] [2024-11-16 06:58:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:06,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:06,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761506509] [2024-11-16 06:58:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:06,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:06,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:06,616 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) [2024-11-16 06:58:06,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:58:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:06,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:06,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:58:06,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:06,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:06,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405628316] [2024-11-16 06:58:06,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:06,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761506509] [2024-11-16 06:58:06,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761506509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:06,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:06,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485939213] [2024-11-16 06:58:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:06,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:06,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:06,744 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:06,803 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-16 06:58:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 06:58:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:06,804 INFO L225 Difference]: With dead ends: 39 [2024-11-16 06:58:06,805 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 06:58:06,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:58:06,806 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 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 [2024-11-16 06:58:06,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 06:58:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-16 06:58:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-16 06:58:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-16 06:58:06,815 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 11 [2024-11-16 06:58:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:06,815 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-16 06:58:06,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:58:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-16 06:58:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:58:06,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:06,817 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:06,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 06:58:07,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:07,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -566380821, now seen corresponding path program 1 times [2024-11-16 06:58:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:07,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334102041] [2024-11-16 06:58:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700937881] [2024-11-16 06:58:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:07,054 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) [2024-11-16 06:58:07,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:58:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:07,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:58:07,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334102041] [2024-11-16 06:58:07,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700937881] [2024-11-16 06:58:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700937881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:07,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620131840] [2024-11-16 06:58:07,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:07,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:07,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:07,144 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:58:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:07,191 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2024-11-16 06:58:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:07,191 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-16 06:58:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:07,192 INFO L225 Difference]: With dead ends: 52 [2024-11-16 06:58:07,192 INFO L226 Difference]: Without dead ends: 48 [2024-11-16 06:58:07,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:58:07,193 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 104 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 [2024-11-16 06:58:07,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 104 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-16 06:58:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-16 06:58:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-16 06:58:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2024-11-16 06:58:07,200 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 16 [2024-11-16 06:58:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:07,200 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2024-11-16 06:58:07,200 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:58:07,200 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2024-11-16 06:58:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 06:58:07,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:07,201 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:07,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:58:07,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 06:58:07,406 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:07,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash 78884467, now seen corresponding path program 1 times [2024-11-16 06:58:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:07,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423031056] [2024-11-16 06:58:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021833662] [2024-11-16 06:58:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:07,425 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) [2024-11-16 06:58:07,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:58:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:07,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:58:07,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:07,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:07,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423031056] [2024-11-16 06:58:07,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:07,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021833662] [2024-11-16 06:58:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021833662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:07,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770688224] [2024-11-16 06:58:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:07,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:07,504 INFO L87 Difference]: Start difference. First operand 47 states and 62 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:07,561 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2024-11-16 06:58:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:07,562 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-16 06:58:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:07,563 INFO L225 Difference]: With dead ends: 77 [2024-11-16 06:58:07,564 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 06:58:07,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:58:07,565 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:07,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 121 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 06:58:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2024-11-16 06:58:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 44 states have internal predecessors, (54), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 06:58:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2024-11-16 06:58:07,576 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 24 [2024-11-16 06:58:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:07,576 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2024-11-16 06:58:07,576 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2024-11-16 06:58:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 06:58:07,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:07,577 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:07,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:58:07,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:07,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:07,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1561046138, now seen corresponding path program 1 times [2024-11-16 06:58:07,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:07,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143972972] [2024-11-16 06:58:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:07,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:58:07,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143972972] [2024-11-16 06:58:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143972972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:07,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:58:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028872549] [2024-11-16 06:58:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:07,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:58:07,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:58:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:07,933 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:07,981 INFO L93 Difference]: Finished difference Result 107 states and 147 transitions. [2024-11-16 06:58:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-16 06:58:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:07,987 INFO L225 Difference]: With dead ends: 107 [2024-11-16 06:58:07,987 INFO L226 Difference]: Without dead ends: 71 [2024-11-16 06:58:07,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:58:07,988 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:07,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 95 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-16 06:58:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-16 06:58:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 47 states have internal predecessors, (56), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 06:58:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2024-11-16 06:58:08,031 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 27 [2024-11-16 06:58:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:08,031 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2024-11-16 06:58:08,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 06:58:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2024-11-16 06:58:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 06:58:08,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:08,034 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:08,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 06:58:08,034 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:08,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1097912627, now seen corresponding path program 1 times [2024-11-16 06:58:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:08,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826254008] [2024-11-16 06:58:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:58:08,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:08,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826254008] [2024-11-16 06:58:08,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826254008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:08,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:58:08,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 06:58:08,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403337501] [2024-11-16 06:58:08,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:08,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:58:08,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:58:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:58:08,229 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 06:58:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:08,269 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2024-11-16 06:58:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:58:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-16 06:58:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:08,270 INFO L225 Difference]: With dead ends: 78 [2024-11-16 06:58:08,270 INFO L226 Difference]: Without dead ends: 75 [2024-11-16 06:58:08,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:58:08,271 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:08,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 110 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-16 06:58:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-16 06:58:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-16 06:58:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2024-11-16 06:58:08,279 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 34 [2024-11-16 06:58:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:08,279 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2024-11-16 06:58:08,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 06:58:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2024-11-16 06:58:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 06:58:08,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:08,281 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:08,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 06:58:08,281 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:08,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2002087737, now seen corresponding path program 1 times [2024-11-16 06:58:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094830836] [2024-11-16 06:58:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 06:58:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:58:08,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094830836] [2024-11-16 06:58:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094830836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846714730] [2024-11-16 06:58:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:08,423 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) [2024-11-16 06:58:08,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:58:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:08,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:58:08,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:58:08,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846714730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:58:08,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:58:08,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-16 06:58:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103861617] [2024-11-16 06:58:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:08,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:58:08,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:08,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:58:08,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:58:08,559 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 06:58:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:08,633 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2024-11-16 06:58:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:58:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-16 06:58:08,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:08,634 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:58:08,634 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 06:58:08,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:58:08,635 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:08,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 160 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 06:58:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2024-11-16 06:58:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 55 states have internal predecessors, (62), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 06:58:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2024-11-16 06:58:08,650 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 40 [2024-11-16 06:58:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:08,651 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2024-11-16 06:58:08,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 06:58:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2024-11-16 06:58:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 06:58:08,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:08,652 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2024-11-16 06:58:08,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:58:08,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:08,853 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:08,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1582105810, now seen corresponding path program 1 times [2024-11-16 06:58:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:08,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984531439] [2024-11-16 06:58:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 06:58:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:58:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:08,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984531439] [2024-11-16 06:58:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984531439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006881433] [2024-11-16 06:58:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:08,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:08,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:08,965 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) [2024-11-16 06:58:08,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:58:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:09,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:58:09,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:58:09,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:58:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:58:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006881433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:58:09,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:58:09,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-16 06:58:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747169619] [2024-11-16 06:58:09,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:58:09,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:58:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:58:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:58:09,156 INFO L87 Difference]: Start difference. First operand 81 states and 105 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-16 06:58:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:09,305 INFO L93 Difference]: Finished difference Result 252 states and 309 transitions. [2024-11-16 06:58:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:58:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 43 [2024-11-16 06:58:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:09,307 INFO L225 Difference]: With dead ends: 252 [2024-11-16 06:58:09,307 INFO L226 Difference]: Without dead ends: 244 [2024-11-16 06:58:09,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:58:09,308 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:09,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 168 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-16 06:58:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2024-11-16 06:58:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 145 states have (on average 1.2) internal successors, (174), 154 states have internal predecessors, (174), 55 states have call successors, (55), 24 states have call predecessors, (55), 24 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-16 06:58:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 280 transitions. [2024-11-16 06:58:09,333 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 280 transitions. Word has length 43 [2024-11-16 06:58:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:09,333 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 280 transitions. [2024-11-16 06:58:09,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-16 06:58:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 280 transitions. [2024-11-16 06:58:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 06:58:09,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:09,335 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:09,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:58:09,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:09,539 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:09,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1552885627, now seen corresponding path program 1 times [2024-11-16 06:58:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120653351] [2024-11-16 06:58:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:09,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 06:58:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455388469] [2024-11-16 06:58:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:09,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:09,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:09,554 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) [2024-11-16 06:58:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:58:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:09,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 06:58:09,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:58:09,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:58:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:58:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120653351] [2024-11-16 06:58:09,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 06:58:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455388469] [2024-11-16 06:58:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455388469] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:09,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:58:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-16 06:58:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136569921] [2024-11-16 06:58:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:58:09,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:58:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:58:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:58:10,016 INFO L87 Difference]: Start difference. First operand 225 states and 280 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 06:58:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:10,132 INFO L93 Difference]: Finished difference Result 244 states and 298 transitions. [2024-11-16 06:58:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:58:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2024-11-16 06:58:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:10,134 INFO L225 Difference]: With dead ends: 244 [2024-11-16 06:58:10,134 INFO L226 Difference]: Without dead ends: 237 [2024-11-16 06:58:10,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-16 06:58:10,135 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:10,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 101 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:58:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-16 06:58:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 172. [2024-11-16 06:58:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 113 states have (on average 1.1327433628318584) internal successors, (128), 118 states have internal predecessors, (128), 36 states have call successors, (36), 22 states have call predecessors, (36), 22 states have return successors, (36), 31 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-16 06:58:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 200 transitions. [2024-11-16 06:58:10,157 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 200 transitions. Word has length 48 [2024-11-16 06:58:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:10,158 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 200 transitions. [2024-11-16 06:58:10,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 06:58:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 200 transitions. [2024-11-16 06:58:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 06:58:10,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:58:10,159 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 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] [2024-11-16 06:58:10,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 06:58:10,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:10,360 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:58:10,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:58:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash 266626381, now seen corresponding path program 1 times [2024-11-16 06:58:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:58:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563902191] [2024-11-16 06:58:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:58:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 06:58:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:58:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:58:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 06:58:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 06:58:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 06:58:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-16 06:58:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-16 06:58:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-16 06:58:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 06:58:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:58:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563902191] [2024-11-16 06:58:10,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563902191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:58:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134564354] [2024-11-16 06:58:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:58:10,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:10,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:58:10,516 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) [2024-11-16 06:58:10,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:58:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:58:10,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 06:58:10,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:58:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 06:58:10,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:58:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-16 06:58:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134564354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:58:10,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:58:10,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-16 06:58:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440869078] [2024-11-16 06:58:10,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:58:10,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:58:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:58:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:58:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:58:10,656 INFO L87 Difference]: Start difference. First operand 172 states and 200 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 06:58:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:58:10,734 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2024-11-16 06:58:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:58:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 64 [2024-11-16 06:58:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:58:10,735 INFO L225 Difference]: With dead ends: 184 [2024-11-16 06:58:10,735 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 06:58:10,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:58:10,736 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:58:10,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 75 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:58:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 06:58:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 06:58:10,737 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) [2024-11-16 06:58:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 06:58:10,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2024-11-16 06:58:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:58:10,737 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 06:58:10,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-16 06:58:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 06:58:10,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 06:58:10,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:58:10,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:58:10,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:58:10,946 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:58:10,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 06:58:11,584 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:58:11,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:58:11 BoogieIcfgContainer [2024-11-16 06:58:11,597 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:58:11,597 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:58:11,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:58:11,598 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:58:11,598 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:58:06" (3/4) ... [2024-11-16 06:58:11,600 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 06:58:11,603 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-16 06:58:11,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-16 06:58:11,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 06:58:11,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 06:58:11,605 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 06:58:11,724 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:58:11,724 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 06:58:11,724 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:58:11,724 INFO L158 Benchmark]: Toolchain (without parser) took 6150.35ms. Allocated memory was 184.5MB in the beginning and 291.5MB in the end (delta: 107.0MB). Free memory was 115.3MB in the beginning and 179.2MB in the end (delta: -64.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: CDTParser took 3.92ms. Allocated memory is still 184.5MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.88ms. Allocated memory is still 184.5MB. Free memory was 115.0MB in the beginning and 102.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.32ms. Allocated memory is still 184.5MB. Free memory was 102.2MB in the beginning and 100.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: Boogie Preprocessor took 36.21ms. Allocated memory is still 184.5MB. Free memory was 100.7MB in the beginning and 99.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: IcfgBuilder took 333.94ms. Allocated memory is still 184.5MB. Free memory was 99.1MB in the beginning and 150.4MB in the end (delta: -51.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: TraceAbstraction took 5396.75ms. Allocated memory was 184.5MB in the beginning and 291.5MB in the end (delta: 107.0MB). Free memory was 150.2MB in the beginning and 184.5MB in the end (delta: -34.3MB). Peak memory consumption was 164.9MB. Max. memory is 16.1GB. [2024-11-16 06:58:11,725 INFO L158 Benchmark]: Witness Printer took 126.58ms. Allocated memory is still 291.5MB. Free memory was 184.5MB in the beginning and 179.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 06:58:11,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.92ms. Allocated memory is still 184.5MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.88ms. Allocated memory is still 184.5MB. Free memory was 115.0MB in the beginning and 102.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.32ms. Allocated memory is still 184.5MB. Free memory was 102.2MB in the beginning and 100.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.21ms. Allocated memory is still 184.5MB. Free memory was 100.7MB in the beginning and 99.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 333.94ms. Allocated memory is still 184.5MB. Free memory was 99.1MB in the beginning and 150.4MB in the end (delta: -51.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5396.75ms. Allocated memory was 184.5MB in the beginning and 291.5MB in the end (delta: 107.0MB). Free memory was 150.2MB in the beginning and 184.5MB in the end (delta: -34.3MB). Peak memory consumption was 164.9MB. Max. memory is 16.1GB. * Witness Printer took 126.58ms. Allocated memory is still 291.5MB. Free memory was 184.5MB in the beginning and 179.2MB in the end (delta: 5.2MB). 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 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 1180 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 842 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 454 IncrementalHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 338 mSDtfsCounter, 454 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 494 GetRequests, 416 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=9, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 100 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 1597 SizeOfPredicates, 13 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 905/967 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: 46]: Location Invariant Derived location invariant: null - InvariantResult [Line: 37]: Location Invariant Derived location invariant: null - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: ((cond != 0) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-11-16 06:58:11,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE