./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0234-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0234-1.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 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:27:33,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:27:33,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:27:33,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:27:33,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:27:33,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:27:33,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:27:33,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:27:33,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:27:33,379 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:27:33,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:27:33,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:27:33,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:27:33,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:27:33,382 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:27:33,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:27:33,384 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:27:33,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:27:33,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:27:33,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:27:33,385 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:27:33,388 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:27:33,388 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:27:33,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:27:33,389 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:27:33,389 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:27:33,389 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:27:33,389 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:27:33,390 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:27:33,390 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:27:33,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:27:33,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:27:33,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:27:33,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:27:33,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:27:33,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:27:33,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:27:33,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:27:33,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:27:33,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:27:33,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:27:33,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:27:33,399 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2024-11-17 00:27:33,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:27:33,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:27:33,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:27:33,650 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:27:33,651 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:27:33,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-1.i [2024-11-17 00:27:35,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:27:35,269 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:27:35,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-1.i [2024-11-17 00:27:35,289 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36e1bf1f6/47fd7c543867436191c0c0d4cf2ad3c8/FLAG522223797 [2024-11-17 00:27:35,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36e1bf1f6/47fd7c543867436191c0c0d4cf2ad3c8 [2024-11-17 00:27:35,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:27:35,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:27:35,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:27:35,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:27:35,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:27:35,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca6a196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35, skipping insertion in model container [2024-11-17 00:27:35,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:27:35,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:27:35,786 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:27:35,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:27:35,871 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:27:35,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35 WrapperNode [2024-11-17 00:27:35,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:27:35,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:27:35,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:27:35,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:27:35,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,927 INFO L138 Inliner]: procedures = 188, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 203 [2024-11-17 00:27:35,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:27:35,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:27:35,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:27:35,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:27:35,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,987 INFO L175 MemorySlicer]: Split 32 memory accesses to 3 slices as follows [2, 4, 26]. 81 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-11-17 00:27:35,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:35,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:36,001 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:36,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:36,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:36,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:36,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:27:36,018 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:27:36,018 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:27:36,018 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:27:36,018 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (1/1) ... [2024-11-17 00:27:36,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:27:36,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:36,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 00:27:36,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 00:27:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:27:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:27:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:27:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 00:27:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 00:27:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:27:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 00:27:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 00:27:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-17 00:27:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:27:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 00:27:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:27:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:27:36,251 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:27:36,252 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:27:36,344 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2024-11-17 00:27:36,717 INFO L? ?]: Removed 197 outVars from TransFormulas that were not future-live. [2024-11-17 00:27:36,717 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:27:36,734 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:27:36,736 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:27:36,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:27:36 BoogieIcfgContainer [2024-11-17 00:27:36,737 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:27:36,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:27:36,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:27:36,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:27:36,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:27:35" (1/3) ... [2024-11-17 00:27:36,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc36c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:27:36, skipping insertion in model container [2024-11-17 00:27:36,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:27:35" (2/3) ... [2024-11-17 00:27:36,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc36c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:27:36, skipping insertion in model container [2024-11-17 00:27:36,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:27:36" (3/3) ... [2024-11-17 00:27:36,748 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2024-11-17 00:27:36,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:27:36,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2024-11-17 00:27:36,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:27:36,875 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;@66ed490d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:27:36,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-17 00:27:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 117 states have (on average 1.829059829059829) internal successors, (214), 192 states have internal predecessors, (214), 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) [2024-11-17 00:27:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-17 00:27:36,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:36,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-17 00:27:36,888 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 72 more)] === [2024-11-17 00:27:36,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 7756453, now seen corresponding path program 1 times [2024-11-17 00:27:36,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:36,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229815561] [2024-11-17 00:27:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:36,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:27:37,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:37,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229815561] [2024-11-17 00:27:37,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229815561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:27:37,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:27:37,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:27:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489877349] [2024-11-17 00:27:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:27:37,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 00:27:37,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 00:27:37,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 00:27:37,075 INFO L87 Difference]: Start difference. First operand has 200 states, 117 states have (on average 1.829059829059829) internal successors, (214), 192 states have internal predecessors, (214), 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) [2024-11-17 00:27:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:37,101 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2024-11-17 00:27:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 00:27:37,103 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 [2024-11-17 00:27:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:37,110 INFO L225 Difference]: With dead ends: 200 [2024-11-17 00:27:37,110 INFO L226 Difference]: Without dead ends: 197 [2024-11-17 00:27:37,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 00:27:37,115 INFO L432 NwaCegarLoop]: 215 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, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:37,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:27:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-17 00:27:37,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-17 00:27:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 189 states have internal predecessors, (200), 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) [2024-11-17 00:27:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2024-11-17 00:27:37,161 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 4 [2024-11-17 00:27:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:37,161 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2024-11-17 00:27:37,162 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) [2024-11-17 00:27:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2024-11-17 00:27:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 00:27:37,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:37,162 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 00:27:37,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:27:37,163 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 72 more)] === [2024-11-17 00:27:37,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1135911666, now seen corresponding path program 1 times [2024-11-17 00:27:37,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:37,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206908957] [2024-11-17 00:27:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:27:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206908957] [2024-11-17 00:27:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206908957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:27:37,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:27:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:27:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974915050] [2024-11-17 00:27:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:27:37,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:27:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:27:37,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:27:37,327 INFO L87 Difference]: Start difference. First operand 197 states and 212 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) [2024-11-17 00:27:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:37,468 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2024-11-17 00:27:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:27:37,469 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 [2024-11-17 00:27:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:37,471 INFO L225 Difference]: With dead ends: 196 [2024-11-17 00:27:37,471 INFO L226 Difference]: Without dead ends: 196 [2024-11-17 00:27:37,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:27:37,473 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:37,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 333 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:27:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-17 00:27:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-17 00:27:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 115 states have (on average 1.7304347826086957) internal successors, (199), 188 states have internal predecessors, (199), 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) [2024-11-17 00:27:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 211 transitions. [2024-11-17 00:27:37,499 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 211 transitions. Word has length 6 [2024-11-17 00:27:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:37,500 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 211 transitions. [2024-11-17 00:27:37,500 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) [2024-11-17 00:27:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 211 transitions. [2024-11-17 00:27:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-17 00:27:37,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:37,501 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:27:37,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:27:37,501 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 72 more)] === [2024-11-17 00:27:37,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash -853523297, now seen corresponding path program 1 times [2024-11-17 00:27:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:37,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766422709] [2024-11-17 00:27:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 00:27:37,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38870326] [2024-11-17 00:27:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:37,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:37,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:37,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:27:37,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:27:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:37,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 00:27:37,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:27:37,769 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 [2024-11-17 00:27:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:27:37,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:27:37,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:37,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766422709] [2024-11-17 00:27:37,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 00:27:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38870326] [2024-11-17 00:27:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38870326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:27:37,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:27:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:27:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680186000] [2024-11-17 00:27:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:27:37,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:27:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:27:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:27:37,799 INFO L87 Difference]: Start difference. First operand 196 states and 211 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) [2024-11-17 00:27:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:37,965 INFO L93 Difference]: Finished difference Result 206 states and 221 transitions. [2024-11-17 00:27:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:27:37,966 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 [2024-11-17 00:27:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:37,968 INFO L225 Difference]: With dead ends: 206 [2024-11-17 00:27:37,968 INFO L226 Difference]: Without dead ends: 206 [2024-11-17 00:27:37,969 INFO L431 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 [2024-11-17 00:27:37,970 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 13 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:37,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 542 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:27:37,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-17 00:27:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-17 00:27:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 124 states have (on average 1.685483870967742) internal successors, (209), 197 states have internal predecessors, (209), 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) [2024-11-17 00:27:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2024-11-17 00:27:37,994 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 7 [2024-11-17 00:27:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:37,995 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2024-11-17 00:27:37,995 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) [2024-11-17 00:27:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2024-11-17 00:27:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-17 00:27:37,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:37,999 INFO L215 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] [2024-11-17 00:27:38,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:27:38,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:38,200 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 72 more)] === [2024-11-17 00:27:38,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash 716667005, now seen corresponding path program 1 times [2024-11-17 00:27:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:38,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394481113] [2024-11-17 00:27:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 00:27:38,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051838810] [2024-11-17 00:27:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:38,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:27:38,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:27:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:38,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-17 00:27:38,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:27:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-17 00:27:38,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:27:38,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394481113] [2024-11-17 00:27:38,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 00:27:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051838810] [2024-11-17 00:27:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051838810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:27:38,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:27:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:27:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730971140] [2024-11-17 00:27:38,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:27:38,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:27:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:27:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:27:38,613 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-11-17 00:27:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:38,665 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2024-11-17 00:27:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:27:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 71 [2024-11-17 00:27:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:38,667 INFO L225 Difference]: With dead ends: 218 [2024-11-17 00:27:38,668 INFO L226 Difference]: Without dead ends: 208 [2024-11-17 00:27:38,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:27:38,669 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:38,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 800 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:27:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-17 00:27:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-17 00:27:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 199 states have internal predecessors, (211), 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) [2024-11-17 00:27:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2024-11-17 00:27:38,687 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 71 [2024-11-17 00:27:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:38,687 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2024-11-17 00:27:38,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-11-17 00:27:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2024-11-17 00:27:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-17 00:27:38,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:38,691 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 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] [2024-11-17 00:27:38,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:27:38,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-17 00:27:38,892 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 72 more)] === [2024-11-17 00:27:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1080237263, now seen corresponding path program 1 times [2024-11-17 00:27:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603860147] [2024-11-17 00:27:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 00:27:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055725337] [2024-11-17 00:27:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:39,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:39,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:39,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:27:39,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:27:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:39,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-17 00:27:39,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:27:39,518 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 [2024-11-17 00:27:39,559 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 [2024-11-17 00:27:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-17 00:27:39,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:27:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-17 00:27:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603860147] [2024-11-17 00:27:39,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 00:27:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055725337] [2024-11-17 00:27:39,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055725337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:27:39,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:27:39,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-11-17 00:27:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876761512] [2024-11-17 00:27:39,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:27:39,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:27:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:27:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:27:39,930 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-17 00:27:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:40,363 INFO L93 Difference]: Finished difference Result 227 states and 243 transitions. [2024-11-17 00:27:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:27:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2024-11-17 00:27:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:40,365 INFO L225 Difference]: With dead ends: 227 [2024-11-17 00:27:40,365 INFO L226 Difference]: Without dead ends: 212 [2024-11-17 00:27:40,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:27:40,366 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:40,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1088 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:27:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-17 00:27:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-17 00:27:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 130 states have (on average 1.6538461538461537) internal successors, (215), 203 states have internal predecessors, (215), 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) [2024-11-17 00:27:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2024-11-17 00:27:40,373 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 76 [2024-11-17 00:27:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:40,374 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2024-11-17 00:27:40,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-17 00:27:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2024-11-17 00:27:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-17 00:27:40,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:40,376 INFO L215 NwaCegarLoop]: trace histogram [20, 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] [2024-11-17 00:27:40,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:27:40,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:40,577 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 72 more)] === [2024-11-17 00:27:40,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash 207389565, now seen corresponding path program 2 times [2024-11-17 00:27:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424432109] [2024-11-17 00:27:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 00:27:40,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225202922] [2024-11-17 00:27:40,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:27:40,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:40,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:40,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:27:40,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:27:41,251 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:27:41,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:27:41,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 00:27:41,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:27:41,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 00:27:41,340 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 [2024-11-17 00:27:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 231 proven. 76 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-17 00:27:41,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:27:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 114 proven. 43 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-17 00:27:41,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:41,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424432109] [2024-11-17 00:27:41,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 00:27:41,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225202922] [2024-11-17 00:27:41,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225202922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:27:41,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:27:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-11-17 00:27:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358014230] [2024-11-17 00:27:41,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:27:41,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:27:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:27:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:27:41,920 INFO L87 Difference]: Start difference. First operand 212 states and 227 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 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) [2024-11-17 00:27:54,374 WARN L286 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 38 DAG size of output: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-17 00:27:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:55,036 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-11-17 00:27:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 00:27:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 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 91 [2024-11-17 00:27:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:55,039 INFO L225 Difference]: With dead ends: 236 [2024-11-17 00:27:55,039 INFO L226 Difference]: Without dead ends: 221 [2024-11-17 00:27:55,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2024-11-17 00:27:55,041 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 40 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:55,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2732 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:27:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-17 00:27:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-17 00:27:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 139 states have (on average 1.6330935251798562) internal successors, (227), 212 states have internal predecessors, (227), 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) [2024-11-17 00:27:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2024-11-17 00:27:55,050 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 91 [2024-11-17 00:27:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:55,051 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2024-11-17 00:27:55,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 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) [2024-11-17 00:27:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2024-11-17 00:27:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-17 00:27:55,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:55,056 INFO L215 NwaCegarLoop]: trace histogram [40, 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] [2024-11-17 00:27:55,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:27:55,256 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 [2024-11-17 00:27:55,257 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 72 more)] === [2024-11-17 00:27:55,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:55,257 INFO L85 PathProgramCache]: Analyzing trace with hash -362934659, now seen corresponding path program 3 times [2024-11-17 00:27:55,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:55,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043823599] [2024-11-17 00:27:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 00:27:55,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163700306] [2024-11-17 00:27:55,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:27:55,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:55,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:27:55,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:27:55,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:27:55,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:27:55,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 00:27:55,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:27:55,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 00:27:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2024-11-17 00:27:55,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:27:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043823599] [2024-11-17 00:27:55,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 00:27:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163700306] [2024-11-17 00:27:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163700306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:27:55,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:27:55,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:27:55,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634618904] [2024-11-17 00:27:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:27:55,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:27:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:27:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:27:55,854 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-17 00:27:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:55,970 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2024-11-17 00:27:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:27:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 111 [2024-11-17 00:27:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:55,973 INFO L225 Difference]: With dead ends: 220 [2024-11-17 00:27:55,973 INFO L226 Difference]: Without dead ends: 220 [2024-11-17 00:27:55,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:27:55,973 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 13 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:55,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 565 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:27:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-17 00:27:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-17 00:27:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.6258992805755397) internal successors, (226), 211 states have internal predecessors, (226), 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) [2024-11-17 00:27:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 238 transitions. [2024-11-17 00:27:55,984 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 238 transitions. Word has length 111 [2024-11-17 00:27:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:55,987 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 238 transitions. [2024-11-17 00:27:55,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-11-17 00:27:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 238 transitions. [2024-11-17 00:27:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-17 00:27:55,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:55,990 INFO L215 NwaCegarLoop]: trace histogram [42, 6, 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] [2024-11-17 00:27:55,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 00:27:56,191 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 [2024-11-17 00:27:56,191 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-17 00:27:56,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:56,192 INFO L85 PathProgramCache]: Analyzing trace with hash 28940748, now seen corresponding path program 1 times [2024-11-17 00:27:56,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:56,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856327900] [2024-11-17 00:27:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:56,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 00:27:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-17 00:27:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-17 00:27:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-17 00:27:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-17 00:27:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-17 00:27:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 496 proven. 35 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2024-11-17 00:27:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:27:57,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856327900] [2024-11-17 00:27:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856327900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:27:57,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377003569] [2024-11-17 00:27:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:57,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:27:57,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:27:57,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:27:57,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:27:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:27:57,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 00:27:57,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:27:58,040 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 [2024-11-17 00:27:58,082 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:27:58,083 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 [2024-11-17 00:27:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 501 proven. 1 refuted. 0 times theorem prover too weak. 727 trivial. 34 not checked. [2024-11-17 00:27:58,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:27:58,346 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:27:58,346 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 [2024-11-17 00:27:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 501 proven. 35 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-17 00:27:58,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377003569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:27:58,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:27:58,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 17 [2024-11-17 00:27:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371255665] [2024-11-17 00:27:58,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:27:58,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:27:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:27:58,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:27:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306 [2024-11-17 00:27:58,373 INFO L87 Difference]: Start difference. First operand 220 states and 238 transitions. Second operand has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-17 00:27:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:27:59,012 INFO L93 Difference]: Finished difference Result 218 states and 236 transitions. [2024-11-17 00:27:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:27:59,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2024-11-17 00:27:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:27:59,016 INFO L225 Difference]: With dead ends: 218 [2024-11-17 00:27:59,016 INFO L226 Difference]: Without dead ends: 218 [2024-11-17 00:27:59,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=344, Unknown=1, NotChecked=38, Total=462 [2024-11-17 00:27:59,017 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 14 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:27:59,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1405 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 831 Invalid, 0 Unknown, 199 Unchecked, 0.5s Time] [2024-11-17 00:27:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-17 00:27:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-17 00:27:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 139 states have (on average 1.6115107913669064) internal successors, (224), 209 states have internal predecessors, (224), 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) [2024-11-17 00:27:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 236 transitions. [2024-11-17 00:27:59,024 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 236 transitions. Word has length 121 [2024-11-17 00:27:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:27:59,025 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 236 transitions. [2024-11-17 00:27:59,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-17 00:27:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 236 transitions. [2024-11-17 00:27:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-17 00:27:59,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:27:59,027 INFO L215 NwaCegarLoop]: trace histogram [42, 6, 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] [2024-11-17 00:27:59,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:27:59,227 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 [2024-11-17 00:27:59,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-17 00:27:59,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:27:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 28940749, now seen corresponding path program 1 times [2024-11-17 00:27:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:27:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301205743] [2024-11-17 00:27:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:27:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:27:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:00,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 00:28:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:00,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-17 00:28:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:00,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-17 00:28:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:00,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-17 00:28:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:00,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-17 00:28:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:01,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-17 00:28:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 496 proven. 71 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2024-11-17 00:28:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:28:02,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301205743] [2024-11-17 00:28:02,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301205743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:28:02,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020079250] [2024-11-17 00:28:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:28:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:28:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:28:02,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:28:02,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:28:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:28:03,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-17 00:28:03,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:28:03,464 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 [2024-11-17 00:28:24,876 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 [2024-11-17 00:28:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:28:24,926 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 18 treesize of output 13 [2024-11-17 00:28:24,933 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:28:24,933 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 [2024-11-17 00:28:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 424 proven. 316 refuted. 0 times theorem prover too weak. 467 trivial. 56 not checked. [2024-11-17 00:28:31,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:28:32,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020079250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:28:32,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:28:32,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 47 [2024-11-17 00:28:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540181654] [2024-11-17 00:28:32,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:28:32,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 00:28:32,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:28:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 00:28:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2199, Unknown=9, NotChecked=94, Total=2450 [2024-11-17 00:28:32,074 INFO L87 Difference]: Start difference. First operand 218 states and 236 transitions. Second operand has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 42 states have internal predecessors, (88), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-17 00:28:36,151 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] [2024-11-17 00:28:40,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-17 00:28:45,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-17 00:28:49,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-17 00:28:53,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-17 00:28:57,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-17 00:29:01,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-17 00:29:06,531 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] [2024-11-17 00:29:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:29:09,172 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2024-11-17 00:29:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 00:29:09,172 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 42 states have internal predecessors, (88), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 121 [2024-11-17 00:29:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:29:09,175 INFO L225 Difference]: With dead ends: 224 [2024-11-17 00:29:09,175 INFO L226 Difference]: Without dead ends: 224 [2024-11-17 00:29:09,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=303, Invalid=3724, Unknown=9, NotChecked=124, Total=4160 [2024-11-17 00:29:09,179 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 43 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:29:09,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3342 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2595 Invalid, 8 Unknown, 197 Unchecked, 35.2s Time] [2024-11-17 00:29:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-17 00:29:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2024-11-17 00:29:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 139 states have (on average 1.5971223021582734) internal successors, (222), 207 states have internal predecessors, (222), 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) [2024-11-17 00:29:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 234 transitions. [2024-11-17 00:29:09,186 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 234 transitions. Word has length 121 [2024-11-17 00:29:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:29:09,187 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 234 transitions. [2024-11-17 00:29:09,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 42 states have internal predecessors, (88), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-17 00:29:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 234 transitions. [2024-11-17 00:29:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-17 00:29:09,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:29:09,188 INFO L215 NwaCegarLoop]: trace histogram [42, 6, 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] [2024-11-17 00:29:09,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 00:29:09,389 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 [2024-11-17 00:29:09,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-17 00:29:09,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:29:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2042260361, now seen corresponding path program 1 times [2024-11-17 00:29:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:29:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501863564] [2024-11-17 00:29:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:29:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:29:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat