./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/lcp.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/verifythis/lcp.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 07:24:43,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 07:24:43,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 07:24:43,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 07:24:43,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 07:24:43,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 07:24:43,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 07:24:43,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 07:24:43,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 07:24:43,646 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 07:24:43,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 07:24:43,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 07:24:43,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 07:24:43,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 07:24:43,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 07:24:43,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 07:24:43,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 07:24:43,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 07:24:43,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 07:24:43,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 07:24:43,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 07:24:43,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 07:24:43,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 07:24:43,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 07:24:43,656 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 07:24:43,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 07:24:43,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 07:24:43,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 07:24:43,668 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 07:24:43,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 07:24:43,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 07:24:43,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 07:24:43,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:24:43,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 07:24:43,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 07:24:43,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 07:24:43,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 07:24:43,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 07:24:43,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 07:24:43,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 07:24:43,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 07:24:43,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 07:24:43,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2024-11-16 07:24:43,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 07:24:43,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 07:24:43,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 07:24:43,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 07:24:43,968 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 07:24:43,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2024-11-16 07:24:45,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 07:24:45,681 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 07:24:45,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2024-11-16 07:24:45,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b509ab8/ba2ca42c18a54314a552d454c4f8f367/FLAGa76c41e5d [2024-11-16 07:24:46,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b509ab8/ba2ca42c18a54314a552d454c4f8f367 [2024-11-16 07:24:46,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 07:24:46,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 07:24:46,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 07:24:46,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 07:24:46,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 07:24:46,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e618486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46, skipping insertion in model container [2024-11-16 07:24:46,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 07:24:46,289 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/verifythis/lcp.c[515,528] [2024-11-16 07:24:46,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:24:46,334 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 07:24:46,348 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/verifythis/lcp.c[515,528] [2024-11-16 07:24:46,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:24:46,378 INFO L204 MainTranslator]: Completed translation [2024-11-16 07:24:46,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46 WrapperNode [2024-11-16 07:24:46,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 07:24:46,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 07:24:46,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 07:24:46,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 07:24:46,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,422 INFO L138 Inliner]: procedures = 20, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2024-11-16 07:24:46,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 07:24:46,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 07:24:46,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 07:24:46,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 07:24:46,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,458 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 6, 7]. 47 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-11-16 07:24:46,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,470 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 07:24:46,479 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 07:24:46,479 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 07:24:46,479 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 07:24:46,480 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 07:24:46,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:24:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:24:46,513 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 07:24:46,517 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 07:24:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 07:24:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 07:24:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 07:24:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 07:24:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 07:24:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 07:24:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 07:24:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 07:24:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 07:24:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 07:24:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 07:24:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 07:24:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 07:24:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 07:24:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 07:24:46,671 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 07:24:46,673 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 07:24:46,847 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-16 07:24:46,847 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 07:24:46,865 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 07:24:46,865 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 07:24:46,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:24:46 BoogieIcfgContainer [2024-11-16 07:24:46,866 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 07:24:46,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 07:24:46,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 07:24:46,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 07:24:46,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:24:46" (1/3) ... [2024-11-16 07:24:46,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dec826f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:46, skipping insertion in model container [2024-11-16 07:24:46,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (2/3) ... [2024-11-16 07:24:46,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dec826f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:46, skipping insertion in model container [2024-11-16 07:24:46,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:24:46" (3/3) ... [2024-11-16 07:24:46,878 INFO L112 eAbstractionObserver]: Analyzing ICFG lcp.c [2024-11-16 07:24:46,892 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 07:24:46,892 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 07:24:46,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 07:24:46,962 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;@5c6baac2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 07:24:46,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 07:24:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 07:24:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 07:24:46,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:24:46,975 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:24:46,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:24:46,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:24:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -649685114, now seen corresponding path program 1 times [2024-11-16 07:24:46,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:24:46,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748158177] [2024-11-16 07:24:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:24:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:24:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:24:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 07:24:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 07:24:47,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:24:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748158177] [2024-11-16 07:24:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748158177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:24:47,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:24:47,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 07:24:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994721848] [2024-11-16 07:24:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:24:47,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 07:24:47,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:24:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 07:24:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 07:24:47,242 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:24:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:24:47,261 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-11-16 07:24:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 07:24:47,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-16 07:24:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:24:47,269 INFO L225 Difference]: With dead ends: 62 [2024-11-16 07:24:47,269 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 07:24:47,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 07:24:47,275 INFO L432 NwaCegarLoop]: 37 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, 37 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 07:24:47,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:24:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 07:24:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 07:24:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:24:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-16 07:24:47,307 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 28 [2024-11-16 07:24:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:24:47,308 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-16 07:24:47,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:24:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-16 07:24:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 07:24:47,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:24:47,310 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:24:47,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 07:24:47,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:24:47,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:24:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1393000799, now seen corresponding path program 1 times [2024-11-16 07:24:47,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:24:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268805765] [2024-11-16 07:24:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:47,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:24:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:24:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:24:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 07:24:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 07:24:47,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:24:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268805765] [2024-11-16 07:24:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268805765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:24:47,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:24:47,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 07:24:47,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305890631] [2024-11-16 07:24:47,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:24:47,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 07:24:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:24:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 07:24:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 07:24:47,856 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 07:24:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:24:47,995 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2024-11-16 07:24:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 07:24:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-16 07:24:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:24:47,997 INFO L225 Difference]: With dead ends: 51 [2024-11-16 07:24:47,998 INFO L226 Difference]: Without dead ends: 33 [2024-11-16 07:24:47,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 07:24:48,000 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:24:48,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 84 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:24:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-16 07:24:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-16 07:24:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:24:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-16 07:24:48,008 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2024-11-16 07:24:48,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:24:48,009 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-16 07:24:48,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 07:24:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-16 07:24:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 07:24:48,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:24:48,010 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:24:48,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 07:24:48,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:24:48,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:24:48,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1898559424, now seen corresponding path program 1 times [2024-11-16 07:24:48,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:24:48,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488953570] [2024-11-16 07:24:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:48,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:24:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:24:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:24:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 07:24:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 07:24:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:24:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488953570] [2024-11-16 07:24:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488953570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:24:48,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:24:48,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 07:24:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261956838] [2024-11-16 07:24:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:24:48,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 07:24:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:24:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 07:24:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 07:24:48,250 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:24:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:24:48,334 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2024-11-16 07:24:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 07:24:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-16 07:24:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:24:48,337 INFO L225 Difference]: With dead ends: 46 [2024-11-16 07:24:48,337 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 07:24:48,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 07:24:48,338 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:24:48,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 126 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:24:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 07:24:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-16 07:24:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:24:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-16 07:24:48,349 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2024-11-16 07:24:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:24:48,349 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-16 07:24:48,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:24:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-16 07:24:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 07:24:48,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:24:48,351 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:24:48,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 07:24:48,351 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:24:48,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:24:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1172175455, now seen corresponding path program 1 times [2024-11-16 07:24:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:24:48,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595369358] [2024-11-16 07:24:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:48,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:24:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:24:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:24:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:24:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 07:24:48,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:24:48,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595369358] [2024-11-16 07:24:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595369358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:24:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330047850] [2024-11-16 07:24:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:48,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:24:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:24:48,589 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 07:24:48,605 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 07:24:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:48,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 07:24:48,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:24:48,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-16 07:24:48,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 54 [2024-11-16 07:24:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 07:24:48,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:24:57,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330047850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:24:57,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:24:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2024-11-16 07:24:57,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118751419] [2024-11-16 07:24:57,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:24:57,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 07:24:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:24:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 07:24:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-16 07:24:57,031 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 07:24:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:24:57,113 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2024-11-16 07:24:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 07:24:57,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2024-11-16 07:24:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:24:57,116 INFO L225 Difference]: With dead ends: 55 [2024-11-16 07:24:57,116 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 07:24:57,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-16 07:24:57,117 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:24:57,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 103 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:24:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 07:24:57,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-16 07:24:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:24:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-16 07:24:57,127 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 33 [2024-11-16 07:24:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:24:57,128 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-16 07:24:57,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-16 07:24:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-16 07:24:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 07:24:57,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:24:57,129 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:24:57,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 07:24:57,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:24:57,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:24:57,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:24:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 666616830, now seen corresponding path program 1 times [2024-11-16 07:24:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:24:57,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337229646] [2024-11-16 07:24:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:24:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:57,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:24:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:57,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:24:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:57,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:24:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 07:24:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:24:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337229646] [2024-11-16 07:24:57,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337229646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:24:57,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:24:57,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 07:24:57,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733623099] [2024-11-16 07:24:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:24:57,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 07:24:57,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:24:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 07:24:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 07:24:57,598 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 07:24:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:24:57,720 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-16 07:24:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 07:24:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-16 07:24:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:24:57,725 INFO L225 Difference]: With dead ends: 41 [2024-11-16 07:24:57,725 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 07:24:57,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-16 07:24:57,726 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:24:57,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 129 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:24:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 07:24:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-16 07:24:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:24:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-16 07:24:57,736 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 33 [2024-11-16 07:24:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:24:57,737 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-16 07:24:57,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 07:24:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-16 07:24:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 07:24:57,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:24:57,740 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:24:57,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 07:24:57,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:24:57,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:24:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2004528229, now seen corresponding path program 1 times [2024-11-16 07:24:57,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:24:57,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648690111] [2024-11-16 07:24:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:24:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:58,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:24:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:58,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 07:24:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:58,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 07:24:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:58,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 07:24:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 07:24:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:24:58,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648690111] [2024-11-16 07:24:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648690111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:24:58,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639703266] [2024-11-16 07:24:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:24:58,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:24:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:24:58,054 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 07:24:58,055 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 07:24:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:24:58,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 07:24:58,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:24:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 07:24:58,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:24:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-16 07:24:58,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639703266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:24:58,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:24:58,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-16 07:24:58,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291511242] [2024-11-16 07:24:58,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:24:58,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 07:24:58,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:24:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 07:24:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-16 07:24:58,627 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 07:24:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:24:58,724 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-11-16 07:24:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 07:24:58,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-16 07:24:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:24:58,725 INFO L225 Difference]: With dead ends: 40 [2024-11-16 07:24:58,725 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 07:24:58,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 07:24:58,727 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:24:58,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 110 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:24:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 07:24:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 07:24:58,728 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 07:24:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 07:24:58,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-11-16 07:24:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:24:58,728 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 07:24:58,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 07:24:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 07:24:58,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 07:24:58,733 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 07:24:58,750 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 07:24:58,933 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,SelfDestructingSolverStorable5 [2024-11-16 07:24:58,937 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-16 07:24:58,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 07:24:59,061 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 07:24:59,068 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.IcfgBacktranslator.translateExpression(IcfgBacktranslator.java:433) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.IcfgBacktranslator.translateExpression(IcfgBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.lib.translation.DefaultTranslator.translateExpressionWithContext(DefaultTranslator.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContext(ModelTranslationContainer.java:102) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContextToString(ModelTranslationContainer.java:92) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionWithContextToString(BacktranslationService.java:105) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.(InvariantResult.java:57) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createInvariantResults(FloydHoareUtils.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-16 07:24:59,072 INFO L158 Benchmark]: Toolchain (without parser) took 13007.58ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 127.5MB in the beginning and 118.4MB in the end (delta: 9.1MB). Peak memory consumption was 93.4MB. Max. memory is 16.1GB. [2024-11-16 07:24:59,072 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 184.5MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 07:24:59,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.01ms. Allocated memory is still 184.5MB. Free memory was 127.5MB in the beginning and 114.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 07:24:59,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.91ms. Allocated memory is still 184.5MB. Free memory was 114.1MB in the beginning and 112.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 07:24:59,073 INFO L158 Benchmark]: Boogie Preprocessor took 55.12ms. Allocated memory is still 184.5MB. Free memory was 112.3MB in the beginning and 110.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 07:24:59,073 INFO L158 Benchmark]: IcfgBuilder took 387.40ms. Allocated memory is still 184.5MB. Free memory was 110.3MB in the beginning and 94.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 07:24:59,073 INFO L158 Benchmark]: TraceAbstraction took 12202.17ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 94.0MB in the beginning and 118.4MB in the end (delta: -24.5MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2024-11-16 07:24:59,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 184.5MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.01ms. Allocated memory is still 184.5MB. Free memory was 127.5MB in the beginning and 114.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.91ms. Allocated memory is still 184.5MB. Free memory was 114.1MB in the beginning and 112.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.12ms. Allocated memory is still 184.5MB. Free memory was 112.3MB in the beginning and 110.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 387.40ms. Allocated memory is still 184.5MB. Free memory was 110.3MB in the beginning and 94.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12202.17ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 94.0MB in the beginning and 118.4MB in the end (delta: -24.5MB). Peak memory consumption was 59.9MB. 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: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 589 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 435 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 298 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 154 mSDtfsCounter, 298 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 267 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 298 ConstructedInterpolants, 4 QuantifiedInterpolants, 1193 SizeOfPredicates, 15 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 122/132 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-16 07:24:59,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/verifythis/lcp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 07:25:01,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 07:25:01,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-16 07:25:01,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 07:25:01,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 07:25:01,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 07:25:01,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 07:25:01,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 07:25:01,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 07:25:01,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 07:25:01,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 07:25:01,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 07:25:01,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 07:25:01,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 07:25:01,509 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 07:25:01,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 07:25:01,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 07:25:01,514 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 07:25:01,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 07:25:01,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 07:25:01,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 07:25:01,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 07:25:01,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 07:25:01,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-16 07:25:01,515 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-16 07:25:01,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 07:25:01,516 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-16 07:25:01,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 07:25:01,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 07:25:01,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 07:25:01,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 07:25:01,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 07:25:01,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 07:25:01,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 07:25:01,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:25:01,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 07:25:01,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 07:25:01,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 07:25:01,520 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-16 07:25:01,520 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-16 07:25:01,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 07:25:01,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 07:25:01,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 07:25:01,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 07:25:01,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2024-11-16 07:25:01,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 07:25:01,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 07:25:01,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 07:25:01,846 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 07:25:01,847 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 07:25:01,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2024-11-16 07:25:03,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 07:25:03,630 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 07:25:03,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2024-11-16 07:25:03,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc2903d2/a1e98ba90e884be2a17ccf527ecb1322/FLAG9580bbd2a [2024-11-16 07:25:03,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc2903d2/a1e98ba90e884be2a17ccf527ecb1322 [2024-11-16 07:25:03,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 07:25:03,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 07:25:04,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 07:25:04,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 07:25:04,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 07:25:04,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:03" (1/1) ... [2024-11-16 07:25:04,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bd44e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04, skipping insertion in model container [2024-11-16 07:25:04,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:03" (1/1) ... [2024-11-16 07:25:04,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 07:25:04,234 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/verifythis/lcp.c[515,528] [2024-11-16 07:25:04,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:25:04,275 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 07:25:04,289 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/verifythis/lcp.c[515,528] [2024-11-16 07:25:04,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:25:04,330 INFO L204 MainTranslator]: Completed translation [2024-11-16 07:25:04,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04 WrapperNode [2024-11-16 07:25:04,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 07:25:04,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 07:25:04,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 07:25:04,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 07:25:04,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,370 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2024-11-16 07:25:04,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 07:25:04,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 07:25:04,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 07:25:04,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 07:25:04,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,422 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 6, 7]. 47 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-11-16 07:25:04,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,436 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 07:25:04,452 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 07:25:04,452 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 07:25:04,452 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 07:25:04,453 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (1/1) ... [2024-11-16 07:25:04,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:25:04,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:25:04,485 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 07:25:04,488 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 07:25:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 07:25:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-16 07:25:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-16 07:25:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-16 07:25:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 07:25:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 07:25:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 07:25:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-16 07:25:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-16 07:25:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-16 07:25:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 07:25:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 07:25:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 07:25:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 07:25:04,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 07:25:04,621 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 07:25:04,624 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 07:25:04,894 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-16 07:25:04,895 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 07:25:04,915 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 07:25:04,915 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 07:25:04,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:04 BoogieIcfgContainer [2024-11-16 07:25:04,916 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 07:25:04,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 07:25:04,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 07:25:04,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 07:25:04,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:25:03" (1/3) ... [2024-11-16 07:25:04,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759ed628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:04, skipping insertion in model container [2024-11-16 07:25:04,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:04" (2/3) ... [2024-11-16 07:25:04,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759ed628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:04, skipping insertion in model container [2024-11-16 07:25:04,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:04" (3/3) ... [2024-11-16 07:25:04,928 INFO L112 eAbstractionObserver]: Analyzing ICFG lcp.c [2024-11-16 07:25:04,961 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 07:25:04,961 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 07:25:05,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 07:25:05,043 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;@7c1f193e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 07:25:05,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 07:25:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 07:25:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 07:25:05,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:25:05,056 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:25:05,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:25:05,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:25:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -649685114, now seen corresponding path program 1 times [2024-11-16 07:25:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 07:25:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249133473] [2024-11-16 07:25:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:25:05,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 07:25:05,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 07:25:05,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-16 07:25:05,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-16 07:25:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:25:05,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-16 07:25:05,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:25:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 07:25:05,249 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 07:25:05,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 07:25:05,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249133473] [2024-11-16 07:25:05,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249133473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:25:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:25:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 07:25:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923203419] [2024-11-16 07:25:05,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:25:05,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 07:25:05,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 07:25:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 07:25:05,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 07:25:05,287 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:25:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:25:05,307 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-11-16 07:25:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 07:25:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-16 07:25:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:25:05,316 INFO L225 Difference]: With dead ends: 62 [2024-11-16 07:25:05,317 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 07:25:05,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 07:25:05,325 INFO L432 NwaCegarLoop]: 37 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, 37 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 07:25:05,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:25:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 07:25:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 07:25:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:25:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-16 07:25:05,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 28 [2024-11-16 07:25:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:25:05,365 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-16 07:25:05,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:25:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-16 07:25:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 07:25:05,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:25:05,367 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:25:05,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-16 07:25:05,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 07:25:05,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:25:05,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:25:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1393000799, now seen corresponding path program 1 times [2024-11-16 07:25:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 07:25:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336067937] [2024-11-16 07:25:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:25:05,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 07:25:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 07:25:05,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-16 07:25:05,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-16 07:25:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:25:05,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 07:25:05,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:25:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 07:25:05,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 07:25:05,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 07:25:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336067937] [2024-11-16 07:25:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336067937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:25:05,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:25:05,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 07:25:05,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582007624] [2024-11-16 07:25:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:25:05,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 07:25:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 07:25:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 07:25:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 07:25:05,852 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:25:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:25:05,985 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-16 07:25:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 07:25:05,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-16 07:25:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:25:05,988 INFO L225 Difference]: With dead ends: 45 [2024-11-16 07:25:05,988 INFO L226 Difference]: Without dead ends: 31 [2024-11-16 07:25:05,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 07:25:05,990 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:25:05,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 126 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:25:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-16 07:25:06,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-16 07:25:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-16 07:25:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-16 07:25:06,001 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2024-11-16 07:25:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:25:06,005 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-16 07:25:06,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 07:25:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-16 07:25:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 07:25:06,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:25:06,006 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:25:06,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-16 07:25:06,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 07:25:06,210 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:25:06,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:25:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1172175455, now seen corresponding path program 1 times [2024-11-16 07:25:06,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 07:25:06,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217607934] [2024-11-16 07:25:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:25:06,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 07:25:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 07:25:06,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-16 07:25:06,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-16 07:25:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:25:06,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 07:25:06,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:25:06,981 INFO L349 Elim1Store]: treesize reduction 70, result has 9.1 percent of original size [2024-11-16 07:25:06,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 16 [2024-11-16 07:25:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 07:25:07,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:25:15,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 07:25:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217607934] [2024-11-16 07:25:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217607934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:25:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408225522] [2024-11-16 07:25:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:25:15,428 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-16 07:25:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-16 07:25:15,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-16 07:25:15,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-16 07:25:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:25:15,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 07:25:15,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:25:15,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-16 07:25:19,689 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int#2| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1|))) is different from true [2024-11-16 07:25:19,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 54 [2024-11-16 07:25:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 07:25:19,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:25:40,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408225522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:25:40,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:25:40,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2024-11-16 07:25:40,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379315805] [2024-11-16 07:25:40,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:25:40,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 07:25:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 07:25:40,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 07:25:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=540, Unknown=7, NotChecked=46, Total=650 [2024-11-16 07:25:40,523 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 07:26:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:26:05,799 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-16 07:26:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 07:26:05,800 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 33 [2024-11-16 07:26:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:26:05,802 INFO L225 Difference]: With dead ends: 70 [2024-11-16 07:26:05,802 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 07:26:05,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=172, Invalid=1379, Unknown=13, NotChecked=76, Total=1640 [2024-11-16 07:26:05,804 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 07:26:05,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 314 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 421 Invalid, 0 Unknown, 71 Unchecked, 0.5s Time] [2024-11-16 07:26:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 07:26:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-16 07:26:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-16 07:26:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-16 07:26:05,815 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 33 [2024-11-16 07:26:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:26:05,815 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-16 07:26:05,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 07:26:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-16 07:26:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 07:26:05,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:26:05,817 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:26:05,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-16 07:26:06,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-16 07:26:06,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-16 07:26:06,221 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:26:06,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:26:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash -520697984, now seen corresponding path program 1 times [2024-11-16 07:26:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 07:26:06,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927386146] [2024-11-16 07:26:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:26:06,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 07:26:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 07:26:06,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-16 07:26:06,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-16 07:26:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:26:06,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-16 07:26:06,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:26:09,246 INFO L349 Elim1Store]: treesize reduction 104, result has 39.9 percent of original size [2024-11-16 07:26:09,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 81 [2024-11-16 07:26:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 07:26:09,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:26:17,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 07:26:17,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927386146] [2024-11-16 07:26:17,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927386146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:26:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [555942464] [2024-11-16 07:26:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:26:17,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-16 07:26:17,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-16 07:26:17,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-16 07:26:17,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-16 07:26:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:26:18,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 07:26:18,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:26:18,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6