./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0237.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/memsafety/test-0237.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 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:49:52,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:49:52,831 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 22:49:52,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:49:52,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:49:52,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:49:52,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:49:52,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:49:52,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:49:52,860 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:49:52,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:49:52,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:49:52,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:49:52,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:49:52,861 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:49:52,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:49:52,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:49:52,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:49:52,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:49:52,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:49:52,864 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea [2025-03-08 22:49:53,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:49:53,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:49:53,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:49:53,105 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:49:53,105 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:49:53,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0237.i [2025-03-08 22:49:54,249 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee2e2d6b/996dd76768354501968937d50943c4c1/FLAG90d23614b [2025-03-08 22:49:54,498 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:49:54,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0237.i [2025-03-08 22:49:54,514 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee2e2d6b/996dd76768354501968937d50943c4c1/FLAG90d23614b [2025-03-08 22:49:54,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee2e2d6b/996dd76768354501968937d50943c4c1 [2025-03-08 22:49:54,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:49:54,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:49:54,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:49:54,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:49:54,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:49:54,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:49:54" (1/1) ... [2025-03-08 22:49:54,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad69ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:54, skipping insertion in model container [2025-03-08 22:49:54,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:49:54" (1/1) ... [2025-03-08 22:49:54,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:49:55,053 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-08 22:49:55,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:49:55,077 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 22:49:55,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:49:55,145 INFO L204 MainTranslator]: Completed translation [2025-03-08 22:49:55,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55 WrapperNode [2025-03-08 22:49:55,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:49:55,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 22:49:55,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 22:49:55,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 22:49:55,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,177 INFO L138 Inliner]: procedures = 188, calls = 66, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 212 [2025-03-08 22:49:55,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 22:49:55,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 22:49:55,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 22:49:55,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 22:49:55,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,211 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 4, 32]. 84 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 18 writes are split as follows [0, 1, 17]. [2025-03-08 22:49:55,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,218 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 22:49:55,225 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 22:49:55,225 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 22:49:55,225 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 22:49:55,226 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (1/1) ... [2025-03-08 22:49:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:49:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:49:55,251 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) [2025-03-08 22:49:55,252 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 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-03-08 22:49:55,267 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 22:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 22:49:55,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 22:49:55,372 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 22:49:55,374 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 22:49:55,442 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-03-08 22:49:55,768 INFO L? ?]: Removed 225 outVars from TransFormulas that were not future-live. [2025-03-08 22:49:55,769 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 22:49:55,779 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 22:49:55,781 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 22:49:55,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:49:55 BoogieIcfgContainer [2025-03-08 22:49:55,781 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 22:49:55,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 22:49:55,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 22:49:55,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 22:49:55,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:49:54" (1/3) ... [2025-03-08 22:49:55,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361fac09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:49:55, skipping insertion in model container [2025-03-08 22:49:55,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:49:55" (2/3) ... [2025-03-08 22:49:55,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361fac09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:49:55, skipping insertion in model container [2025-03-08 22:49:55,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:49:55" (3/3) ... [2025-03-08 22:49:55,790 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0237.i [2025-03-08 22:49:55,802 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 22:49:55,804 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0237.i that has 2 procedures, 205 locations, 1 initial locations, 11 loop locations, and 87 error locations. [2025-03-08 22:49:55,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 22:49:55,848 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;@5b060197, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 22:49:55,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2025-03-08 22:49:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 110 states have (on average 1.990909090909091) internal successors, (219), 197 states have internal predecessors, (219), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-08 22:49:55,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:55,855 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-08 22:49:55,855 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:55,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 7910354, now seen corresponding path program 1 times [2025-03-08 22:49:55,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:55,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233007531] [2025-03-08 22:49:55,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:55,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-08 22:49:55,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-08 22:49:55,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:55,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:49:55,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233007531] [2025-03-08 22:49:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233007531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:49:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:49:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:49:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969003514] [2025-03-08 22:49:55,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:49:55,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 22:49:55,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:55,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 22:49:55,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 22:49:55,975 INFO L87 Difference]: Start difference. First operand has 205 states, 110 states have (on average 1.990909090909091) internal successors, (219), 197 states have internal predecessors, (219), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-03-08 22:49:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:56,000 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2025-03-08 22:49:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 22:49:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2025-03-08 22:49:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:56,008 INFO L225 Difference]: With dead ends: 205 [2025-03-08 22:49:56,009 INFO L226 Difference]: Without dead ends: 203 [2025-03-08 22:49:56,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 22:49:56,014 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:56,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:49:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-08 22:49:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-08 22:49:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 109 states have (on average 1.889908256880734) internal successors, (206), 195 states have internal predecessors, (206), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2025-03-08 22:49:56,064 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 4 [2025-03-08 22:49:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:56,064 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2025-03-08 22:49:56,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-03-08 22:49:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2025-03-08 22:49:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 22:49:56,065 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:56,065 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 22:49:56,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 22:49:56,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:56,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -987994578, now seen corresponding path program 1 times [2025-03-08 22:49:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:56,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025611728] [2025-03-08 22:49:56,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:56,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:56,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 22:49:56,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 22:49:56,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:56,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:49:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025611728] [2025-03-08 22:49:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025611728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:49:56,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:49:56,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:49:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479281109] [2025-03-08 22:49:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:49:56,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:49:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:56,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:49:56,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:49:56,214 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-08 22:49:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:56,357 INFO L93 Difference]: Finished difference Result 202 states and 217 transitions. [2025-03-08 22:49:56,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:49:56,357 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), 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 6 [2025-03-08 22:49:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:56,358 INFO L225 Difference]: With dead ends: 202 [2025-03-08 22:49:56,359 INFO L226 Difference]: Without dead ends: 202 [2025-03-08 22:49:56,359 INFO L434 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 [2025-03-08 22:49:56,360 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 4 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:56,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 341 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:49:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-08 22:49:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2025-03-08 22:49:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 109 states have (on average 1.8807339449541285) internal successors, (205), 194 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 217 transitions. [2025-03-08 22:49:56,370 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 217 transitions. Word has length 6 [2025-03-08 22:49:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:56,371 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 217 transitions. [2025-03-08 22:49:56,371 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), 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) [2025-03-08 22:49:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 217 transitions. [2025-03-08 22:49:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 22:49:56,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:56,371 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:49:56,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 22:49:56,372 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:56,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash -563060866, now seen corresponding path program 1 times [2025-03-08 22:49:56,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:56,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841439307] [2025-03-08 22:49:56,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:56,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 22:49:56,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 22:49:56,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:56,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 22:49:56,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338452420] [2025-03-08 22:49:56,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:56,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:56,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:49:56,401 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) [2025-03-08 22:49:56,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 22:49:56,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 22:49:56,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 22:49:56,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:56,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:56,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 22:49:56,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:49:56,520 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 6 treesize of output 5 [2025-03-08 22:49:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:49:56,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:49:56,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:56,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841439307] [2025-03-08 22:49:56,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 22:49:56,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338452420] [2025-03-08 22:49:56,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338452420] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:49:56,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:49:56,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:49:56,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306385706] [2025-03-08 22:49:56,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:49:56,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:49:56,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:56,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:49:56,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:49:56,543 INFO L87 Difference]: Start difference. First operand 202 states and 217 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-08 22:49:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:56,671 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2025-03-08 22:49:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 22:49:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2025-03-08 22:49:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:56,673 INFO L225 Difference]: With dead ends: 211 [2025-03-08 22:49:56,673 INFO L226 Difference]: Without dead ends: 211 [2025-03-08 22:49:56,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:49:56,675 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 11 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:56,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 562 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:49:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-03-08 22:49:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2025-03-08 22:49:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 117 states have (on average 1.829059829059829) internal successors, (214), 202 states have internal predecessors, (214), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 226 transitions. [2025-03-08 22:49:56,687 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 226 transitions. Word has length 7 [2025-03-08 22:49:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:56,687 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 226 transitions. [2025-03-08 22:49:56,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-08 22:49:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 226 transitions. [2025-03-08 22:49:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-08 22:49:56,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:56,688 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:49:56,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 22:49:56,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:56,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:56,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1104994345, now seen corresponding path program 1 times [2025-03-08 22:49:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:56,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355637161] [2025-03-08 22:49:56,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:56,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:56,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 22:49:56,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 22:49:56,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:56,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 22:49:56,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492680762] [2025-03-08 22:49:56,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:56,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:49:56,914 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) [2025-03-08 22:49:56,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 22:49:56,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 22:49:56,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 22:49:56,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:56,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:56,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 22:49:56,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:49:57,018 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 6 treesize of output 5 [2025-03-08 22:49:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:49:57,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:49:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355637161] [2025-03-08 22:49:57,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 22:49:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492680762] [2025-03-08 22:49:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492680762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:49:57,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:49:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:49:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776622071] [2025-03-08 22:49:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:49:57,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:49:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:57,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:49:57,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:49:57,037 INFO L87 Difference]: Start difference. First operand 211 states and 226 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:49:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:57,160 INFO L93 Difference]: Finished difference Result 220 states and 235 transitions. [2025-03-08 22:49:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 22:49:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2025-03-08 22:49:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:57,162 INFO L225 Difference]: With dead ends: 220 [2025-03-08 22:49:57,162 INFO L226 Difference]: Without dead ends: 220 [2025-03-08 22:49:57,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:49:57,162 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 11 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:57,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 565 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:49:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-08 22:49:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2025-03-08 22:49:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 125 states have (on average 1.784) internal successors, (223), 210 states have internal predecessors, (223), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2025-03-08 22:49:57,177 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 19 [2025-03-08 22:49:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:57,177 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2025-03-08 22:49:57,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 22:49:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2025-03-08 22:49:57,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 22:49:57,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:57,178 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:49:57,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 22:49:57,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-08 22:49:57,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1870373697, now seen corresponding path program 1 times [2025-03-08 22:49:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:57,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318132032] [2025-03-08 22:49:57,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:57,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 22:49:57,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 22:49:57,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:57,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 22:49:57,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245187781] [2025-03-08 22:49:57,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:57,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:49:57,450 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) [2025-03-08 22:49:57,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 22:49:57,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 22:49:57,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 22:49:57,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:57,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:57,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-03-08 22:49:57,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:49:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 22:49:57,659 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:49:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318132032] [2025-03-08 22:49:57,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 22:49:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245187781] [2025-03-08 22:49:57,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245187781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:49:57,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:49:57,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 22:49:57,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580640629] [2025-03-08 22:49:57,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:49:57,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:49:57,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:57,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:49:57,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:49:57,663 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 22:49:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:57,703 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2025-03-08 22:49:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:49:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-03-08 22:49:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:57,704 INFO L225 Difference]: With dead ends: 238 [2025-03-08 22:49:57,705 INFO L226 Difference]: Without dead ends: 223 [2025-03-08 22:49:57,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:49:57,706 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 2 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:57,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 828 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:49:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-08 22:49:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2025-03-08 22:49:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 128 states have (on average 1.765625) internal successors, (226), 213 states have internal predecessors, (226), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2025-03-08 22:49:57,718 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 66 [2025-03-08 22:49:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:57,718 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2025-03-08 22:49:57,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 22:49:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2025-03-08 22:49:57,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-08 22:49:57,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:57,720 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:49:57,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 22:49:57,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:57,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:57,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -740298377, now seen corresponding path program 1 times [2025-03-08 22:49:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607676583] [2025-03-08 22:49:57,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:57,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:57,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-08 22:49:58,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 22:49:58,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:58,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 22:49:58,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592621695] [2025-03-08 22:49:58,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:58,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:58,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:49:58,089 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) [2025-03-08 22:49:58,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 22:49:58,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-08 22:49:58,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 22:49:58,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:58,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:58,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-08 22:49:58,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:49:58,319 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 7 [2025-03-08 22:49:58,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 22:49:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 22:49:58,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:49:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-03-08 22:49:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607676583] [2025-03-08 22:49:58,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 22:49:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592621695] [2025-03-08 22:49:58,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592621695] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:49:58,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 22:49:58,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2025-03-08 22:49:58,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314707340] [2025-03-08 22:49:58,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 22:49:58,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 22:49:58,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:58,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 22:49:58,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 22:49:58,565 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 22:49:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:58,887 INFO L93 Difference]: Finished difference Result 248 states and 264 transitions. [2025-03-08 22:49:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 22:49:58,888 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2025-03-08 22:49:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:58,889 INFO L225 Difference]: With dead ends: 248 [2025-03-08 22:49:58,889 INFO L226 Difference]: Without dead ends: 228 [2025-03-08 22:49:58,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2025-03-08 22:49:58,889 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 22 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:58,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1508 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:49:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-03-08 22:49:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2025-03-08 22:49:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 133 states have (on average 1.736842105263158) internal successors, (231), 218 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2025-03-08 22:49:58,896 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 71 [2025-03-08 22:49:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:58,897 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2025-03-08 22:49:58,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 22:49:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2025-03-08 22:49:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-08 22:49:58,898 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:58,898 INFO L218 NwaCegarLoop]: trace histogram [18, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:49:58,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 22:49:59,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:59,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:59,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:59,099 INFO L85 PathProgramCache]: Analyzing trace with hash -384895871, now seen corresponding path program 2 times [2025-03-08 22:49:59,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:59,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955512987] [2025-03-08 22:49:59,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 22:49:59,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:59,137 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-03-08 22:49:59,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 22:49:59,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 22:49:59,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 22:49:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390676506] [2025-03-08 22:49:59,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 22:49:59,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:49:59,221 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) [2025-03-08 22:49:59,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 22:49:59,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-03-08 22:49:59,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 22:49:59,474 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 22:49:59,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:49:59,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 22:49:59,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:49:59,504 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 [2025-03-08 22:49:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2025-03-08 22:49:59,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:49:59,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:49:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955512987] [2025-03-08 22:49:59,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 22:49:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390676506] [2025-03-08 22:49:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390676506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:49:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:49:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:49:59,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306795633] [2025-03-08 22:49:59,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:49:59,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:49:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:49:59,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:49:59,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:49:59,515 INFO L87 Difference]: Start difference. First operand 228 states and 243 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 22:49:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:49:59,611 INFO L93 Difference]: Finished difference Result 227 states and 242 transitions. [2025-03-08 22:49:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 22:49:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 84 [2025-03-08 22:49:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:49:59,612 INFO L225 Difference]: With dead ends: 227 [2025-03-08 22:49:59,612 INFO L226 Difference]: Without dead ends: 227 [2025-03-08 22:49:59,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:49:59,613 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 11 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:49:59,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 572 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:49:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-03-08 22:49:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2025-03-08 22:49:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 133 states have (on average 1.7293233082706767) internal successors, (230), 217 states have internal predecessors, (230), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:49:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 242 transitions. [2025-03-08 22:49:59,618 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 242 transitions. Word has length 84 [2025-03-08 22:49:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:49:59,618 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 242 transitions. [2025-03-08 22:49:59,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 22:49:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 242 transitions. [2025-03-08 22:49:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 22:49:59,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:49:59,620 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2025-03-08 22:49:59,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 22:49:59,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:49:59,820 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:49:59,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:49:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1420567417, now seen corresponding path program 1 times [2025-03-08 22:49:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:49:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098863681] [2025-03-08 22:49:59,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:49:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:49:59,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 22:49:59,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 22:49:59,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:49:59,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 22 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-03-08 22:50:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098863681] [2025-03-08 22:50:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098863681] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929604451] [2025-03-08 22:50:00,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:00,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:00,489 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) [2025-03-08 22:50:00,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 22:50:00,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 22:50:00,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 22:50:00,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:00,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:00,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 22:50:00,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:00,764 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-03-08 22:50:00,801 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-08 22:50:00,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-03-08 22:50:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 21 not checked. [2025-03-08 22:50:00,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:01,001 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-08 22:50:01,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2025-03-08 22:50:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 22 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-03-08 22:50:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929604451] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:50:01,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:50:01,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 16 [2025-03-08 22:50:01,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532897569] [2025-03-08 22:50:01,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:01,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 22:50:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:01,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 22:50:01,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2025-03-08 22:50:01,017 INFO L87 Difference]: Start difference. First operand 227 states and 242 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 22:50:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:01,467 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2025-03-08 22:50:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 22:50:01,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2025-03-08 22:50:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:01,469 INFO L225 Difference]: With dead ends: 223 [2025-03-08 22:50:01,469 INFO L226 Difference]: Without dead ends: 223 [2025-03-08 22:50:01,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2025-03-08 22:50:01,470 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 19 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:01,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1398 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 890 Invalid, 0 Unknown, 204 Unchecked, 0.4s Time] [2025-03-08 22:50:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-08 22:50:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2025-03-08 22:50:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 133 states have (on average 1.699248120300752) internal successors, (226), 213 states have internal predecessors, (226), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:50:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2025-03-08 22:50:01,474 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 93 [2025-03-08 22:50:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:01,474 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2025-03-08 22:50:01,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 22:50:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2025-03-08 22:50:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 22:50:01,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:01,475 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2025-03-08 22:50:01,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 22:50:01,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:01,676 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:01,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1420567418, now seen corresponding path program 1 times [2025-03-08 22:50:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149043412] [2025-03-08 22:50:01,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:01,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 22:50:01,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 22:50:01,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:01,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 22:50:01,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822934751] [2025-03-08 22:50:01,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:01,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:01,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:01,783 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) [2025-03-08 22:50:01,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 22:50:01,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 22:50:02,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 22:50:02,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:02,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:02,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-08 22:50:02,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:02,244 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 7 [2025-03-08 22:50:02,467 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-03-08 22:50:02,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:50:02,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-08 22:50:02,507 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:02,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-08 22:50:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 22 not checked. [2025-03-08 22:50:02,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149043412] [2025-03-08 22:50:02,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 22:50:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822934751] [2025-03-08 22:50:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822934751] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:02,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 22:50:02,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-03-08 22:50:02,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857067938] [2025-03-08 22:50:02,599 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:02,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 22:50:02,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:02,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 22:50:02,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-03-08 22:50:02,600 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-08 22:50:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:03,299 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2025-03-08 22:50:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 22:50:03,299 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 93 [2025-03-08 22:50:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:03,300 INFO L225 Difference]: With dead ends: 219 [2025-03-08 22:50:03,300 INFO L226 Difference]: Without dead ends: 219 [2025-03-08 22:50:03,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2025-03-08 22:50:03,301 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 33 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:03,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 910 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 928 Invalid, 0 Unknown, 199 Unchecked, 0.5s Time] [2025-03-08 22:50:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-03-08 22:50:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2025-03-08 22:50:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 133 states have (on average 1.669172932330827) internal successors, (222), 209 states have internal predecessors, (222), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:50:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2025-03-08 22:50:03,305 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 93 [2025-03-08 22:50:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:03,306 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2025-03-08 22:50:03,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-08 22:50:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2025-03-08 22:50:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 22:50:03,309 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:03,310 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:03,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 22:50:03,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:03,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:03,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1811322063, now seen corresponding path program 1 times [2025-03-08 22:50:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009304891] [2025-03-08 22:50:03,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:03,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:03,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 22:50:03,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 22:50:03,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:03,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2025-03-08 22:50:03,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:03,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009304891] [2025-03-08 22:50:03,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009304891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:03,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:03,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 22:50:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692116329] [2025-03-08 22:50:03,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:03,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 22:50:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:03,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 22:50:03,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 22:50:03,946 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-08 22:50:04,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:04,225 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2025-03-08 22:50:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 22:50:04,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 96 [2025-03-08 22:50:04,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:04,226 INFO L225 Difference]: With dead ends: 218 [2025-03-08 22:50:04,226 INFO L226 Difference]: Without dead ends: 218 [2025-03-08 22:50:04,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 22:50:04,227 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 9 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:04,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1000 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:50:04,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-03-08 22:50:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2025-03-08 22:50:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.6616541353383458) internal successors, (221), 208 states have internal predecessors, (221), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 22:50:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 233 transitions. [2025-03-08 22:50:04,231 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 233 transitions. Word has length 96 [2025-03-08 22:50:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:04,231 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 233 transitions. [2025-03-08 22:50:04,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-08 22:50:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 233 transitions. [2025-03-08 22:50:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 22:50:04,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:04,232 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:04,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 22:50:04,232 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:04,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1811322064, now seen corresponding path program 1 times [2025-03-08 22:50:04,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:04,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558758577] [2025-03-08 22:50:04,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:04,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 22:50:04,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 22:50:04,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:04,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 32 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 22:50:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558758577] [2025-03-08 22:50:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558758577] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134523839] [2025-03-08 22:50:05,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:05,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:05,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:05,484 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) [2025-03-08 22:50:05,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 22:50:05,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 22:50:05,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 22:50:05,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:05,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:05,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-03-08 22:50:05,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:06,016 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 10 treesize of output 9 [2025-03-08 22:50:11,110 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-03-08 22:50:11,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:50:11,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-08 22:50:11,165 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:11,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-08 22:50:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 161 proven. 142 refuted. 0 times theorem prover too weak. 92 trivial. 50 not checked. [2025-03-08 22:50:11,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134523839] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:11,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 22:50:11,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28] total 43 [2025-03-08 22:50:11,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545195927] [2025-03-08 22:50:11,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:11,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-08 22:50:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:11,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-08 22:50:11,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1753, Unknown=2, NotChecked=84, Total=1980 [2025-03-08 22:50:11,309 INFO L87 Difference]: Start difference. First operand 218 states and 233 transitions. Second operand has 43 states, 41 states have (on average 2.073170731707317) internal successors, (85), 37 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 22:50:15,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:50:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:18,058 INFO L93 Difference]: Finished difference Result 253 states and 280 transitions. [2025-03-08 22:50:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 22:50:18,059 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.073170731707317) internal successors, (85), 37 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 96 [2025-03-08 22:50:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:18,060 INFO L225 Difference]: With dead ends: 253 [2025-03-08 22:50:18,060 INFO L226 Difference]: Without dead ends: 250 [2025-03-08 22:50:18,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=314, Invalid=3848, Unknown=2, NotChecked=126, Total=4290 [2025-03-08 22:50:18,064 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 97 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:18,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3648 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2581 Invalid, 1 Unknown, 211 Unchecked, 5.6s Time] [2025-03-08 22:50:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-03-08 22:50:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 224. [2025-03-08 22:50:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.644927536231884) internal successors, (227), 214 states have internal predecessors, (227), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-08 22:50:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 242 transitions. [2025-03-08 22:50:18,070 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 242 transitions. Word has length 96 [2025-03-08 22:50:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:18,070 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 242 transitions. [2025-03-08 22:50:18,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.073170731707317) internal successors, (85), 37 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 22:50:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 242 transitions. [2025-03-08 22:50:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 22:50:18,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:18,072 INFO L218 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:18,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 22:50:18,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 22:50:18,273 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:18,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:18,274 INFO L85 PathProgramCache]: Analyzing trace with hash -670310870, now seen corresponding path program 2 times [2025-03-08 22:50:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:18,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229404839] [2025-03-08 22:50:18,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 22:50:18,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:18,303 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-03-08 22:50:18,366 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 22:50:18,366 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 22:50:18,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 223 proven. 40 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 22:50:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229404839] [2025-03-08 22:50:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229404839] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048033267] [2025-03-08 22:50:19,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 22:50:19,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:19,504 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:50:19,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 22:50:19,657 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-03-08 22:50:19,899 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 22:50:19,899 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 22:50:19,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:19,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-08 22:50:19,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:20,141 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 10 treesize of output 9 [2025-03-08 22:50:25,126 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_zalloc_or_die_calloc_model_~size#1_154| Int) (|v_zalloc_or_die_calloc_model_~nmemb#1_154| Int)) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| (* |v_zalloc_or_die_calloc_model_~size#1_154| |v_zalloc_or_die_calloc_model_~nmemb#1_154|))) (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0)))) is different from true [2025-03-08 22:50:25,290 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-03-08 22:50:25,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:50:25,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-08 22:50:25,313 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:25,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-08 22:50:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 158 proven. 223 refuted. 0 times theorem prover too weak. 76 trivial. 14 not checked. [2025-03-08 22:50:25,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:25,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048033267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:25,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 22:50:25,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 36] total 52 [2025-03-08 22:50:25,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859620117] [2025-03-08 22:50:25,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:25,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-08 22:50:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:25,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-08 22:50:25,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2483, Unknown=2, NotChecked=202, Total=2862 [2025-03-08 22:50:25,487 INFO L87 Difference]: Start difference. First operand 224 states and 242 transitions. Second operand has 52 states, 50 states have (on average 1.8) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 22:50:29,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:50:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:32,830 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2025-03-08 22:50:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-08 22:50:32,831 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.8) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2025-03-08 22:50:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:32,832 INFO L225 Difference]: With dead ends: 271 [2025-03-08 22:50:32,832 INFO L226 Difference]: Without dead ends: 268 [2025-03-08 22:50:32,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=398, Invalid=5614, Unknown=2, NotChecked=306, Total=6320 [2025-03-08 22:50:32,833 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 98 mSDsluCounter, 4041 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 489 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:32,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 4238 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2826 Invalid, 1 Unknown, 489 Unchecked, 6.0s Time] [2025-03-08 22:50:32,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2025-03-08 22:50:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 225. [2025-03-08 22:50:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 139 states have (on average 1.6474820143884892) internal successors, (229), 215 states have internal predecessors, (229), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-08 22:50:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 244 transitions. [2025-03-08 22:50:32,840 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 244 transitions. Word has length 97 [2025-03-08 22:50:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:32,840 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 244 transitions. [2025-03-08 22:50:32,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.8) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 22:50:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 244 transitions. [2025-03-08 22:50:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 22:50:32,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:32,842 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:32,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 22:50:33,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:33,045 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:33,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:33,046 INFO L85 PathProgramCache]: Analyzing trace with hash -291520496, now seen corresponding path program 3 times [2025-03-08 22:50:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971212422] [2025-03-08 22:50:33,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 22:50:33,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:33,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 10 equivalence classes. [2025-03-08 22:50:33,126 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 66 of 98 statements. [2025-03-08 22:50:33,128 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-08 22:50:33,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 241 proven. 49 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 22:50:33,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:33,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971212422] [2025-03-08 22:50:33,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971212422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:33,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660467165] [2025-03-08 22:50:33,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 22:50:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:33,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:50:33,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 22:50:34,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 10 equivalence classes. [2025-03-08 22:50:34,119 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 98 statements. [2025-03-08 22:50:34,120 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 22:50:34,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:34,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 22:50:34,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:34,141 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 10 treesize of output 9 [2025-03-08 22:50:34,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 22:50:34,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 22:50:34,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2025-03-08 22:50:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2025-03-08 22:50:34,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 22:50:34,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660467165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:34,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 22:50:34,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 28 [2025-03-08 22:50:34,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296790866] [2025-03-08 22:50:34,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:34,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 22:50:34,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:34,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 22:50:34,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2025-03-08 22:50:34,859 INFO L87 Difference]: Start difference. First operand 225 states and 244 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-08 22:50:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:35,375 INFO L93 Difference]: Finished difference Result 224 states and 243 transitions. [2025-03-08 22:50:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 22:50:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2025-03-08 22:50:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:35,376 INFO L225 Difference]: With dead ends: 224 [2025-03-08 22:50:35,376 INFO L226 Difference]: Without dead ends: 224 [2025-03-08 22:50:35,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2025-03-08 22:50:35,377 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 3 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:35,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1189 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 22:50:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-03-08 22:50:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2025-03-08 22:50:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 139 states have (on average 1.6402877697841727) internal successors, (228), 214 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-08 22:50:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 243 transitions. [2025-03-08 22:50:35,381 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 243 transitions. Word has length 98 [2025-03-08 22:50:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:35,381 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 243 transitions. [2025-03-08 22:50:35,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-08 22:50:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 243 transitions. [2025-03-08 22:50:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 22:50:35,382 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:35,383 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:35,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 22:50:35,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 22:50:35,587 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:35,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash -263090862, now seen corresponding path program 1 times [2025-03-08 22:50:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:35,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031123981] [2025-03-08 22:50:35,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:35,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:35,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 22:50:35,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 22:50:35,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:35,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 284 proven. 74 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 22:50:36,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031123981] [2025-03-08 22:50:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031123981] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697854267] [2025-03-08 22:50:36,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:36,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:36,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:36,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:50:36,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 22:50:36,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 22:50:36,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 22:50:36,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:36,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:36,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-08 22:50:36,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:36,515 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-08 22:50:36,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-03-08 22:50:36,641 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2025-03-08 22:50:36,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2025-03-08 22:50:36,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 22:50:36,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-08 22:50:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 309 proven. 48 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-03-08 22:50:36,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:36,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697854267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:36,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 22:50:36,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23] total 27 [2025-03-08 22:50:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134114866] [2025-03-08 22:50:36,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:36,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-08 22:50:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:36,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-08 22:50:36,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2025-03-08 22:50:36,772 INFO L87 Difference]: Start difference. First operand 224 states and 243 transitions. Second operand has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 24 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 22:50:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:37,336 INFO L93 Difference]: Finished difference Result 220 states and 239 transitions. [2025-03-08 22:50:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 22:50:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 24 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2025-03-08 22:50:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:37,337 INFO L225 Difference]: With dead ends: 220 [2025-03-08 22:50:37,337 INFO L226 Difference]: Without dead ends: 220 [2025-03-08 22:50:37,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 22:50:37,338 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 35 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:37,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1919 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 22:50:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-08 22:50:37,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2025-03-08 22:50:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.6115107913669064) internal successors, (224), 210 states have internal predecessors, (224), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-08 22:50:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 239 transitions. [2025-03-08 22:50:37,341 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 239 transitions. Word has length 101 [2025-03-08 22:50:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:37,341 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 239 transitions. [2025-03-08 22:50:37,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 24 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 22:50:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 239 transitions. [2025-03-08 22:50:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 22:50:37,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:37,342 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:37,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-08 22:50:37,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 22:50:37,543 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:50:37,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash -263090861, now seen corresponding path program 1 times [2025-03-08 22:50:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:37,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494794060] [2025-03-08 22:50:37,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:37,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 22:50:37,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 22:50:37,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:37,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 241 proven. 49 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 22:50:38,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494794060] [2025-03-08 22:50:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494794060] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115613713] [2025-03-08 22:50:38,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:38,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:38,532 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:50:38,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 22:50:38,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 22:50:38,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 22:50:38,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:38,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:38,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-03-08 22:50:38,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:39,149 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 10 treesize of output 9 [2025-03-08 22:50:45,591 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-03-08 22:50:45,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2025-03-08 22:50:45,611 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:45,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-08 22:50:45,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-03-08 22:50:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 189 proven. 217 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-08 22:50:45,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115613713] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:45,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 22:50:45,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 33] total 50 [2025-03-08 22:50:45,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256231896] [2025-03-08 22:50:45,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:45,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-08 22:50:45,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:45,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-08 22:50:45,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2483, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 22:50:45,840 INFO L87 Difference]: Start difference. First operand 220 states and 239 transitions. Second operand has 50 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 22:50:49,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:50:54,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:50:58,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:51:02,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:51:06,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:51:11,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:51:16,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-03-08 22:51:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:18,845 INFO L93 Difference]: Finished difference Result 264 states and 301 transitions. [2025-03-08 22:51:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-08 22:51:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2025-03-08 22:51:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:18,846 INFO L225 Difference]: With dead ends: 264 [2025-03-08 22:51:18,846 INFO L226 Difference]: Without dead ends: 261 [2025-03-08 22:51:18,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=386, Invalid=5164, Unknown=0, NotChecked=0, Total=5550 [2025-03-08 22:51:18,848 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 94 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:18,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3705 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2434 Invalid, 7 Unknown, 0 Unchecked, 30.9s Time] [2025-03-08 22:51:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-03-08 22:51:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 221. [2025-03-08 22:51:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 140 states have (on average 1.6142857142857143) internal successors, (226), 211 states have internal predecessors, (226), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-08 22:51:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 241 transitions. [2025-03-08 22:51:18,853 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 241 transitions. Word has length 101 [2025-03-08 22:51:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:18,853 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 241 transitions. [2025-03-08 22:51:18,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 22:51:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 241 transitions. [2025-03-08 22:51:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-08 22:51:18,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:18,854 INFO L218 NwaCegarLoop]: trace histogram [23, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:18,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 22:51:19,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 22:51:19,055 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:51:19,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash -189395911, now seen corresponding path program 2 times [2025-03-08 22:51:19,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:19,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908403314] [2025-03-08 22:51:19,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 22:51:19,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:19,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 102 statements into 2 equivalence classes. [2025-03-08 22:51:19,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 102 of 102 statements. [2025-03-08 22:51:19,106 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 22:51:19,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2025-03-08 22:51:19,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908403314] [2025-03-08 22:51:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908403314] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432787558] [2025-03-08 22:51:19,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 22:51:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:19,571 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:51:19,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 22:51:19,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 102 statements into 2 equivalence classes. [2025-03-08 22:51:19,835 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 102 of 102 statements. [2025-03-08 22:51:19,835 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 22:51:19,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:19,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-08 22:51:19,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:19,889 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 10 treesize of output 9 [2025-03-08 22:51:20,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 22:51:20,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 22:51:20,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-08 22:51:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 127 proven. 81 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2025-03-08 22:51:20,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2025-03-08 22:51:20,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432787558] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:51:20,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:51:20,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 37 [2025-03-08 22:51:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260501020] [2025-03-08 22:51:20,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:51:20,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 22:51:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:20,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 22:51:20,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 22:51:20,932 INFO L87 Difference]: Start difference. First operand 221 states and 241 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 34 states have internal predecessors, (69), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 22:51:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:22,525 INFO L93 Difference]: Finished difference Result 253 states and 275 transitions. [2025-03-08 22:51:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 22:51:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 34 states have internal predecessors, (69), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 1 states have call successors, (8) Word has length 102 [2025-03-08 22:51:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:22,526 INFO L225 Difference]: With dead ends: 253 [2025-03-08 22:51:22,526 INFO L226 Difference]: Without dead ends: 235 [2025-03-08 22:51:22,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 22:51:22,527 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 12 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:22,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3575 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 22:51:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-03-08 22:51:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 223. [2025-03-08 22:51:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 142 states have (on average 1.6056338028169015) internal successors, (228), 213 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-08 22:51:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 243 transitions. [2025-03-08 22:51:22,532 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 243 transitions. Word has length 102 [2025-03-08 22:51:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:22,532 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 243 transitions. [2025-03-08 22:51:22,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 34 states have internal predecessors, (69), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-08 22:51:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 243 transitions. [2025-03-08 22:51:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 22:51:22,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:22,533 INFO L218 NwaCegarLoop]: trace histogram [25, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:22,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 22:51:22,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 22:51:22,734 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-03-08 22:51:22,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1731115449, now seen corresponding path program 3 times [2025-03-08 22:51:22,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:22,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951722267] [2025-03-08 22:51:22,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 22:51:22,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:22,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 10 equivalence classes. [2025-03-08 22:51:22,843 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 71 of 104 statements. [2025-03-08 22:51:22,843 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-08 22:51:22,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 305 proven. 144 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-03-08 22:51:24,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:24,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951722267] [2025-03-08 22:51:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951722267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488997988] [2025-03-08 22:51:24,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 22:51:24,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:24,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:24,561 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:51:24,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 22:51:24,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 104 statements into 10 equivalence classes. [2025-03-08 22:51:24,896 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 49 of 104 statements. [2025-03-08 22:51:24,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 22:51:24,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:24,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-08 22:51:24,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:24,912 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 7 [2025-03-08 22:51:24,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 22:51:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 165 proven. 10 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2025-03-08 22:51:25,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 165 proven. 10 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2025-03-08 22:51:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488997988] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:51:25,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:51:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 9, 9] total 44 [2025-03-08 22:51:25,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842262960] [2025-03-08 22:51:25,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:51:25,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 22:51:25,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:25,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 22:51:25,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 22:51:25,663 INFO L87 Difference]: Start difference. First operand 223 states and 243 transitions. Second operand has 44 states, 43 states have (on average 2.186046511627907) internal successors, (94), 40 states have internal predecessors, (94), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10)