./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-examples/sanfoundry_24-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-examples/sanfoundry_24-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e3ff0b77765ac98635f2070c186c57a6cae0bb79eb8bc9016d9d716e81867aa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:58:32,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:58:32,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 14:58:32,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:58:32,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:58:32,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:58:32,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:58:32,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:58:32,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 14:58:32,501 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 14:58:32,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:58:32,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:58:32,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:58:32,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:58:32,505 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:58:32,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:58:32,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:58:32,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:58:32,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:58:32,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:58:32,507 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 14:58:32,510 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 14:58:32,510 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 14:58:32,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:58:32,511 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 14:58:32,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:58:32,511 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:58:32,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:58:32,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:58:32,512 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:58:32,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:58:32,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 14:58:32,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:58:32,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:32,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:58:32,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:58:32,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:58:32,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:58:32,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:58:32,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:58:32,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:58:32,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:58:32,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3ff0b77765ac98635f2070c186c57a6cae0bb79eb8bc9016d9d716e81867aa [2024-11-10 14:58:32,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:58:32,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:58:32,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:58:32,829 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:58:32,829 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:58:32,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_24-2.i [2024-11-10 14:58:34,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:58:34,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:58:34,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-2.i [2024-11-10 14:58:34,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651c8ff7f/d153353099194d26a82b6e60b895d037/FLAG9a46e4e15 [2024-11-10 14:58:34,848 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651c8ff7f/d153353099194d26a82b6e60b895d037 [2024-11-10 14:58:34,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:58:34,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:58:34,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:34,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:58:34,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:58:34,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:34" (1/1) ... [2024-11-10 14:58:34,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2bf858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:34, skipping insertion in model container [2024-11-10 14:58:34,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:34" (1/1) ... [2024-11-10 14:58:34,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:58:35,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:35,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:58:35,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:58:35,138 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:58:35,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35 WrapperNode [2024-11-10 14:58:35,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:58:35,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:35,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:58:35,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:58:35,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,181 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2024-11-10 14:58:35,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:58:35,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:58:35,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:58:35,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:58:35,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,215 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 14:58:35,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,226 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:58:35,235 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:58:35,236 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:58:35,236 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:58:35,236 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (1/1) ... [2024-11-10 14:58:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:58:35,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:35,270 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) [2024-11-10 14:58:35,273 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 [2024-11-10 14:58:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:58:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 14:58:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 14:58:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 14:58:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 14:58:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 14:58:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:58:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:58:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 14:58:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 14:58:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 14:58:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 14:58:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 14:58:35,392 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:58:35,395 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:58:35,630 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L23: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2024-11-10 14:58:35,648 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-10 14:58:35,648 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:58:35,670 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:58:35,670 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:58:35,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:35 BoogieIcfgContainer [2024-11-10 14:58:35,671 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:58:35,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:58:35,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:58:35,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:58:35,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:58:34" (1/3) ... [2024-11-10 14:58:35,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bab3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:35, skipping insertion in model container [2024-11-10 14:58:35,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:35" (2/3) ... [2024-11-10 14:58:35,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bab3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:58:35, skipping insertion in model container [2024-11-10 14:58:35,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:58:35" (3/3) ... [2024-11-10 14:58:35,682 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-2.i [2024-11-10 14:58:35,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:58:35,700 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 14:58:35,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:58:35,743 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=None, 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;@1db55e9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:58:35,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-10 14:58:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 48 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-10 14:58:35,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:35,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 14:58:35,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:35,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash 78220204, now seen corresponding path program 1 times [2024-11-10 14:58:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878584874] [2024-11-10 14:58:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878584874] [2024-11-10 14:58:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878584874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:36,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:36,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478597894] [2024-11-10 14:58:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:36,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:36,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:36,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:36,075 INFO L87 Difference]: Start difference. First operand has 52 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 48 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-10 14:58:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:36,161 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-11-10 14:58:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2024-11-10 14:58:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:36,170 INFO L225 Difference]: With dead ends: 46 [2024-11-10 14:58:36,171 INFO L226 Difference]: Without dead ends: 43 [2024-11-10 14:58:36,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:36,177 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:36,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-10 14:58:36,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-10 14:58:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 39 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-11-10 14:58:36,218 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 5 [2024-11-10 14:58:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:36,219 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-11-10 14:58:36,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-10 14:58:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-11-10 14:58:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-10 14:58:36,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:36,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 14:58:36,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:58:36,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:36,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 78220205, now seen corresponding path program 1 times [2024-11-10 14:58:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975632948] [2024-11-10 14:58:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:36,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975632948] [2024-11-10 14:58:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975632948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:36,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:36,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:58:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301753547] [2024-11-10 14:58:36,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:36,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:58:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:58:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:36,367 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-10 14:58:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:36,419 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-10 14:58:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:58:36,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2024-11-10 14:58:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:36,421 INFO L225 Difference]: With dead ends: 47 [2024-11-10 14:58:36,421 INFO L226 Difference]: Without dead ends: 47 [2024-11-10 14:58:36,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:58:36,423 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:36,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-10 14:58:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-10 14:58:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-10 14:58:36,431 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 5 [2024-11-10 14:58:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:36,431 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-10 14:58:36,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-10 14:58:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-10 14:58:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 14:58:36,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:36,433 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:36,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:58:36,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:36,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1911043079, now seen corresponding path program 1 times [2024-11-10 14:58:36,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546813489] [2024-11-10 14:58:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546813489] [2024-11-10 14:58:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546813489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:36,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:36,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:36,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533370010] [2024-11-10 14:58:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:36,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:36,598 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-10 14:58:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:36,719 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-10 14:58:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:36,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2024-11-10 14:58:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:36,722 INFO L225 Difference]: With dead ends: 65 [2024-11-10 14:58:36,723 INFO L226 Difference]: Without dead ends: 65 [2024-11-10 14:58:36,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:36,724 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 61 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:36,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 50 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-10 14:58:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2024-11-10 14:58:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 52 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-10 14:58:36,734 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 8 [2024-11-10 14:58:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:36,737 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-10 14:58:36,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-10 14:58:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-10 14:58:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 14:58:36,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:36,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 14:58:36,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:58:36,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:36,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash 946413391, now seen corresponding path program 1 times [2024-11-10 14:58:36,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:36,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796009855] [2024-11-10 14:58:36,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:36,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:36,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796009855] [2024-11-10 14:58:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796009855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:36,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440236444] [2024-11-10 14:58:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:36,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:36,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:36,896 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) [2024-11-10 14:58:36,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 14:58:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:36,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 14:58:36,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:37,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-10 14:58:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:37,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:37,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440236444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:37,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:37,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-10 14:58:37,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598979759] [2024-11-10 14:58:37,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:37,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:58:37,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:37,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:58:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:37,285 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-10 14:58:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:37,425 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-11-10 14:58:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:58:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) Word has length 9 [2024-11-10 14:58:37,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:37,428 INFO L225 Difference]: With dead ends: 66 [2024-11-10 14:58:37,428 INFO L226 Difference]: Without dead ends: 66 [2024-11-10 14:58:37,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-10 14:58:37,430 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:37,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 111 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:37,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-10 14:58:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2024-11-10 14:58:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2024-11-10 14:58:37,446 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 9 [2024-11-10 14:58:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:37,447 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2024-11-10 14:58:37,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-10 14:58:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2024-11-10 14:58:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 14:58:37,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:37,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:37,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:37,649 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 [2024-11-10 14:58:37,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:37,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1892027513, now seen corresponding path program 1 times [2024-11-10 14:58:37,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:37,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144023639] [2024-11-10 14:58:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144023639] [2024-11-10 14:58:37,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144023639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:37,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:37,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:58:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438388918] [2024-11-10 14:58:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:37,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 14:58:37,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:37,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 14:58:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:37,755 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-10 14:58:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:37,794 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-11-10 14:58:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 14:58:37,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2024-11-10 14:58:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:37,796 INFO L225 Difference]: With dead ends: 61 [2024-11-10 14:58:37,796 INFO L226 Difference]: Without dead ends: 58 [2024-11-10 14:58:37,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 14:58:37,797 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:37,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 14:58:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-10 14:58:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-10 14:58:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-10 14:58:37,805 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 13 [2024-11-10 14:58:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:37,805 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-10 14:58:37,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-10 14:58:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-10 14:58:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 14:58:37,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:37,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:37,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:58:37,807 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:37,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1218805067, now seen corresponding path program 1 times [2024-11-10 14:58:37,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:37,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72590752] [2024-11-10 14:58:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 14:58:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72590752] [2024-11-10 14:58:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72590752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:37,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:58:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267555353] [2024-11-10 14:58:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:37,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 14:58:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 14:58:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:37,899 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-10 14:58:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:37,961 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2024-11-10 14:58:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 14:58:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2024-11-10 14:58:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:37,963 INFO L225 Difference]: With dead ends: 76 [2024-11-10 14:58:37,963 INFO L226 Difference]: Without dead ends: 70 [2024-11-10 14:58:37,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 14:58:37,964 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:37,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-10 14:58:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2024-11-10 14:58:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 54 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 14:58:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-11-10 14:58:37,971 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 13 [2024-11-10 14:58:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:37,971 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-11-10 14:58:37,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-10 14:58:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-11-10 14:58:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-10 14:58:37,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:37,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:37,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:58:37,972 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:37,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash -618310569, now seen corresponding path program 1 times [2024-11-10 14:58:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793348570] [2024-11-10 14:58:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793348570] [2024-11-10 14:58:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793348570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035466373] [2024-11-10 14:58:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:38,069 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) [2024-11-10 14:58:38,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 14:58:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:38,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 14:58:38,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:38,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:38,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035466373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:38,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:38,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-10 14:58:38,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600551243] [2024-11-10 14:58:38,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:38,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 14:58:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 14:58:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:58:38,260 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2024-11-10 14:58:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:38,415 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2024-11-10 14:58:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 14:58:38,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) Word has length 17 [2024-11-10 14:58:38,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:38,417 INFO L225 Difference]: With dead ends: 112 [2024-11-10 14:58:38,417 INFO L226 Difference]: Without dead ends: 108 [2024-11-10 14:58:38,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-10 14:58:38,418 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 75 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:38,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 211 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-10 14:58:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2024-11-10 14:58:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 80 states have internal predecessors, (90), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-10 14:58:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-11-10 14:58:38,425 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 17 [2024-11-10 14:58:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:38,425 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-11-10 14:58:38,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2024-11-10 14:58:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-11-10 14:58:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:38,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:38,426 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:38,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 14:58:38,627 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,SelfDestructingSolverStorable6 [2024-11-10 14:58:38,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:38,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1570126114, now seen corresponding path program 1 times [2024-11-10 14:58:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101494291] [2024-11-10 14:58:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:58:38,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101494291] [2024-11-10 14:58:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101494291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 14:58:38,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132735464] [2024-11-10 14:58:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:38,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:58:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:58:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:38,950 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:39,058 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2024-11-10 14:58:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:39,059 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-10 14:58:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:39,060 INFO L225 Difference]: With dead ends: 93 [2024-11-10 14:58:39,060 INFO L226 Difference]: Without dead ends: 93 [2024-11-10 14:58:39,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:58:39,060 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:39,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 201 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-10 14:58:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-11-10 14:58:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 83 states have internal predecessors, (93), 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) [2024-11-10 14:58:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2024-11-10 14:58:39,066 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 21 [2024-11-10 14:58:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:39,067 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2024-11-10 14:58:39,067 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2024-11-10 14:58:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:39,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:39,068 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1] [2024-11-10 14:58:39,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 14:58:39,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:39,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1908544565, now seen corresponding path program 2 times [2024-11-10 14:58:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:39,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053125685] [2024-11-10 14:58:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053125685] [2024-11-10 14:58:39,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053125685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852994205] [2024-11-10 14:58:39,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:39,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:39,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:39,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:39,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 14:58:39,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:39,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:39,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 14:58:39,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:39,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-10 14:58:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:39,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852994205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:39,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-10 14:58:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169602468] [2024-11-10 14:58:39,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:39,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 14:58:39,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 14:58:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-10 14:58:39,736 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-10 14:58:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:40,039 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2024-11-10 14:58:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 14:58:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 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) Word has length 21 [2024-11-10 14:58:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:40,040 INFO L225 Difference]: With dead ends: 114 [2024-11-10 14:58:40,040 INFO L226 Difference]: Without dead ends: 114 [2024-11-10 14:58:40,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2024-11-10 14:58:40,041 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:40,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 169 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 14:58:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-10 14:58:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-10 14:58:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 107 states have internal predecessors, (123), 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) [2024-11-10 14:58:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2024-11-10 14:58:40,047 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 21 [2024-11-10 14:58:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:40,048 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2024-11-10 14:58:40,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 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) [2024-11-10 14:58:40,048 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2024-11-10 14:58:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-10 14:58:40,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:40,049 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:40,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:40,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:40,253 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:40,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1811249927, now seen corresponding path program 2 times [2024-11-10 14:58:40,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:40,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860997594] [2024-11-10 14:58:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:40,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:58:40,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860997594] [2024-11-10 14:58:40,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860997594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033692874] [2024-11-10 14:58:40,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:58:40,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:40,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:40,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 14:58:40,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:58:40,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:40,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 14:58:40,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:40,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-10 14:58:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:58:40,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 14:58:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033692874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:40,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:40,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 14:58:40,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081954811] [2024-11-10 14:58:40,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:40,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 14:58:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 14:58:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-10 14:58:40,645 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 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) [2024-11-10 14:58:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:40,815 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2024-11-10 14:58:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 14:58:40,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 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) Word has length 21 [2024-11-10 14:58:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:40,817 INFO L225 Difference]: With dead ends: 160 [2024-11-10 14:58:40,817 INFO L226 Difference]: Without dead ends: 160 [2024-11-10 14:58:40,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:58:40,818 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 142 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:40,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 125 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-10 14:58:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-10 14:58:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 144 states have (on average 1.1875) internal successors, (171), 148 states have internal predecessors, (171), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 14:58:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2024-11-10 14:58:40,825 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2024-11-10 14:58:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:40,825 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2024-11-10 14:58:40,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 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) [2024-11-10 14:58:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2024-11-10 14:58:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 14:58:40,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:40,829 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:58:40,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 14:58:41,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:41,030 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:41,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash -461807581, now seen corresponding path program 1 times [2024-11-10 14:58:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320829338] [2024-11-10 14:58:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 14:58:41,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:41,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320829338] [2024-11-10 14:58:41,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320829338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:58:41,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:58:41,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 14:58:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889294228] [2024-11-10 14:58:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:58:41,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 14:58:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 14:58:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-10 14:58:41,252 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:41,353 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2024-11-10 14:58:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 14:58:41,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-10 14:58:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:41,354 INFO L225 Difference]: With dead ends: 160 [2024-11-10 14:58:41,355 INFO L226 Difference]: Without dead ends: 140 [2024-11-10 14:58:41,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 14:58:41,355 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:41,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 190 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 14:58:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-10 14:58:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2024-11-10 14:58:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 125 states have internal predecessors, (146), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-10 14:58:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2024-11-10 14:58:41,368 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 29 [2024-11-10 14:58:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:41,368 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2024-11-10 14:58:41,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:58:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2024-11-10 14:58:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-10 14:58:41,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:41,370 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 14:58:41,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 14:58:41,370 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1226261557, now seen corresponding path program 3 times [2024-11-10 14:58:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579704612] [2024-11-10 14:58:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:41,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:41,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579704612] [2024-11-10 14:58:41,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579704612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:41,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904803813] [2024-11-10 14:58:41,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:58:41,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:41,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:41,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:41,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 14:58:41,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 14:58:41,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:41,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 14:58:41,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 14:58:41,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 14:58:42,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904803813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:42,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2024-11-10 14:58:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164125184] [2024-11-10 14:58:42,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:42,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 14:58:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 14:58:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-10 14:58:42,053 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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) [2024-11-10 14:58:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:42,660 INFO L93 Difference]: Finished difference Result 176 states and 209 transitions. [2024-11-10 14:58:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 14:58:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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) Word has length 36 [2024-11-10 14:58:42,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:42,661 INFO L225 Difference]: With dead ends: 176 [2024-11-10 14:58:42,661 INFO L226 Difference]: Without dead ends: 46 [2024-11-10 14:58:42,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=412, Invalid=1480, Unknown=0, NotChecked=0, Total=1892 [2024-11-10 14:58:42,662 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 688 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:42,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 227 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 14:58:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-10 14:58:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-10 14:58:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 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) [2024-11-10 14:58:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2024-11-10 14:58:42,665 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 36 [2024-11-10 14:58:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:42,665 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2024-11-10 14:58:42,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 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) [2024-11-10 14:58:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2024-11-10 14:58:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 14:58:42,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:42,666 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1] [2024-11-10 14:58:42,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 14:58:42,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 14:58:42,867 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:42,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash 287769345, now seen corresponding path program 3 times [2024-11-10 14:58:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:42,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273789091] [2024-11-10 14:58:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:43,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:43,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273789091] [2024-11-10 14:58:43,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273789091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:43,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680964816] [2024-11-10 14:58:43,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 14:58:43,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:43,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:43,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:43,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 14:58:43,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 14:58:43,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:43,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 14:58:43,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:43,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-10 14:58:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:43,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680964816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:44,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 36 [2024-11-10 14:58:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059801585] [2024-11-10 14:58:44,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:44,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 14:58:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 14:58:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=902, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 14:58:44,565 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 37 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 37 states have internal predecessors, (133), 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) [2024-11-10 14:58:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:45,328 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2024-11-10 14:58:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 14:58:45,329 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 37 states have internal predecessors, (133), 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) Word has length 45 [2024-11-10 14:58:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:45,329 INFO L225 Difference]: With dead ends: 94 [2024-11-10 14:58:45,329 INFO L226 Difference]: Without dead ends: 94 [2024-11-10 14:58:45,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1014, Invalid=2178, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 14:58:45,331 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:45,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 147 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 14:58:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-10 14:58:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-10 14:58:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 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) [2024-11-10 14:58:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2024-11-10 14:58:45,334 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 45 [2024-11-10 14:58:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:45,334 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2024-11-10 14:58:45,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 37 states have internal predecessors, (133), 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) [2024-11-10 14:58:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2024-11-10 14:58:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-10 14:58:45,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:45,336 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1] [2024-11-10 14:58:45,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 14:58:45,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:45,541 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:45,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1490482329, now seen corresponding path program 4 times [2024-11-10 14:58:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:45,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832973938] [2024-11-10 14:58:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:45,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:46,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832973938] [2024-11-10 14:58:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832973938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:46,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812763320] [2024-11-10 14:58:46,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 14:58:46,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:46,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:46,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:46,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 14:58:46,815 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 14:58:46,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:58:46,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-10 14:58:46,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:58:46,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-10 14:58:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:47,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:58:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812763320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:58:49,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:58:49,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2024-11-10 14:58:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248488225] [2024-11-10 14:58:49,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:58:49,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-10 14:58:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:58:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-10 14:58:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1194, Invalid=3636, Unknown=0, NotChecked=0, Total=4830 [2024-11-10 14:58:49,141 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 70 states, 69 states have (on average 3.9565217391304346) internal successors, (273), 70 states have internal predecessors, (273), 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) [2024-11-10 14:58:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 14:58:51,422 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2024-11-10 14:58:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-10 14:58:51,423 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 3.9565217391304346) internal successors, (273), 70 states have internal predecessors, (273), 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) Word has length 93 [2024-11-10 14:58:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 14:58:51,423 INFO L225 Difference]: With dead ends: 190 [2024-11-10 14:58:51,424 INFO L226 Difference]: Without dead ends: 190 [2024-11-10 14:58:51,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2734, Invalid=5638, Unknown=0, NotChecked=0, Total=8372 [2024-11-10 14:58:51,428 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 14:58:51,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 797 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 14:58:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-10 14:58:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-10 14:58:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.0052910052910053) internal successors, (190), 189 states have internal predecessors, (190), 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) [2024-11-10 14:58:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2024-11-10 14:58:51,434 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 93 [2024-11-10 14:58:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 14:58:51,436 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2024-11-10 14:58:51,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 3.9565217391304346) internal successors, (273), 70 states have internal predecessors, (273), 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) [2024-11-10 14:58:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2024-11-10 14:58:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-10 14:58:51,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 14:58:51,443 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1] [2024-11-10 14:58:51,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 14:58:51,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:51,644 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-11-10 14:58:51,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:58:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash -895539255, now seen corresponding path program 5 times [2024-11-10 14:58:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:58:51,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853587875] [2024-11-10 14:58:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:58:51,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:58:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:58:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:58:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:58:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853587875] [2024-11-10 14:58:54,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853587875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:58:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684423225] [2024-11-10 14:58:54,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 14:58:54,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:58:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:58:54,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:58:54,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 14:59:48,057 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-10 14:59:48,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:59:48,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-10 14:59:48,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:59:48,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-10 14:59:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:51,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:59:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:59:56,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684423225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:59:56,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:59:56,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 142 [2024-11-10 14:59:56,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678439501] [2024-11-10 14:59:56,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:59:56,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-10 14:59:56,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:59:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-10 14:59:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4748, Invalid=15558, Unknown=0, NotChecked=0, Total=20306 [2024-11-10 14:59:56,504 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 143 states, 142 states have (on average 3.9788732394366195) internal successors, (565), 143 states have internal predecessors, (565), 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)