./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:57:02,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:57:02,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:57:02,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:57:02,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:57:02,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:57:02,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:57:02,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:57:02,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:57:02,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:57:02,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:57:02,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:57:02,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:57:02,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:57:02,383 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:57:02,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:57:02,384 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:57:02,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:57:02,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:57:02,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:57:02,384 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:57:02,386 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:57:02,386 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:57:02,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:57:02,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:57:02,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:57:02,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:57:02,387 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:57:02,388 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:57:02,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:57:02,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:57:02,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:57:02,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:57:02,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:02,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:57:02,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:57:02,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:57:02,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:57:02,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:57:02,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:57:02,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:57:02,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:57:02,402 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 [2024-10-11 17:57:02,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:57:02,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:57:02,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:57:02,624 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:57:02,624 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:57:02,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2024-10-11 17:57:03,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:57:03,984 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:57:03,984 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2024-10-11 17:57:03,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4fc0d764b/026372f36c1b4535a7e244c66a30b337/FLAG4820ff947 [2024-10-11 17:57:04,332 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4fc0d764b/026372f36c1b4535a7e244c66a30b337 [2024-10-11 17:57:04,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:57:04,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:57:04,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:04,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:57:04,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:57:04,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b45ccb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04, skipping insertion in model container [2024-10-11 17:57:04,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:57:04,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:04,619 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:57:04,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:04,695 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:57:04,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04 WrapperNode [2024-10-11 17:57:04,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:04,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:04,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:57:04,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:57:04,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,735 INFO L138 Inliner]: procedures = 180, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2024-10-11 17:57:04,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:04,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:57:04,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:57:04,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:57:04,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,761 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 8, 12]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 8 writes are split as follows [0, 2, 6]. [2024-10-11 17:57:04,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:57:04,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:57:04,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:57:04,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:57:04,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (1/1) ... [2024-10-11 17:57:04,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:04,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:04,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:57:04,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:57:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2024-10-11 17:57:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 17:57:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:57:04,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:57:04,948 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:57:04,949 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:57:05,186 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-10-11 17:57:05,187 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:57:05,234 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:57:05,234 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 17:57:05,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:05 BoogieIcfgContainer [2024-10-11 17:57:05,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:57:05,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:57:05,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:57:05,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:57:05,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:57:04" (1/3) ... [2024-10-11 17:57:05,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76411e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:05, skipping insertion in model container [2024-10-11 17:57:05,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:04" (2/3) ... [2024-10-11 17:57:05,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76411e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:05, skipping insertion in model container [2024-10-11 17:57:05,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:05" (3/3) ... [2024-10-11 17:57:05,252 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0219.i [2024-10-11 17:57:05,275 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:57:05,275 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-11 17:57:05,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:57:05,313 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;@807137f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:57:05,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-11 17:57:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 91 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 17:57:05,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:05,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 17:57:05,322 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:05,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash 212575, now seen corresponding path program 1 times [2024-10-11 17:57:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452599381] [2024-10-11 17:57:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452599381] [2024-10-11 17:57:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452599381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:05,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143833728] [2024-10-11 17:57:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:05,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 17:57:05,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 17:57:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:57:05,469 INFO L87 Difference]: Start difference. First operand has 95 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 91 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-11 17:57:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:05,499 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2024-10-11 17:57:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 17:57:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-10-11 17:57:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:05,506 INFO L225 Difference]: With dead ends: 95 [2024-10-11 17:57:05,506 INFO L226 Difference]: Without dead ends: 94 [2024-10-11 17:57:05,508 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 [2024-10-11 17:57:05,510 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:05,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:57:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-11 17:57:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-10-11 17:57:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 45 states have (on average 2.111111111111111) internal successors, (95), 90 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2024-10-11 17:57:05,546 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 3 [2024-10-11 17:57:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:05,546 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2024-10-11 17:57:05,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-11 17:57:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2024-10-11 17:57:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 17:57:05,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:05,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 17:57:05,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:57:05,547 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:05,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash 202090613, now seen corresponding path program 1 times [2024-10-11 17:57:05,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:05,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872305519] [2024-10-11 17:57:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:05,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872305519] [2024-10-11 17:57:05,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872305519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745652103] [2024-10-11 17:57:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:05,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:57:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:57:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:57:05,687 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-11 17:57:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:05,766 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2024-10-11 17:57:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:57:05,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2024-10-11 17:57:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:05,768 INFO L225 Difference]: With dead ends: 93 [2024-10-11 17:57:05,769 INFO L226 Difference]: Without dead ends: 93 [2024-10-11 17:57:05,769 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 [2024-10-11 17:57:05,771 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 3 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:05,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-11 17:57:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-11 17:57:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 45 states have (on average 2.088888888888889) internal successors, (94), 89 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2024-10-11 17:57:05,779 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 5 [2024-10-11 17:57:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:05,779 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2024-10-11 17:57:05,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-11 17:57:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2024-10-11 17:57:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:57:05,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:05,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:57:05,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:57:05,781 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:05,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1969841741, now seen corresponding path program 1 times [2024-10-11 17:57:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226142487] [2024-10-11 17:57:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017860132] [2024-10-11 17:57:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:05,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:05,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:05,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:05,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:57:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:05,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 17:57:05,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:05,932 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 [2024-10-11 17:57:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:05,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226142487] [2024-10-11 17:57:05,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017860132] [2024-10-11 17:57:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017860132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:57:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437068706] [2024-10-11 17:57:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:05,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:57:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:57:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:57:05,956 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 17:57:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:06,063 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2024-10-11 17:57:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:57:06,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2024-10-11 17:57:06,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:06,065 INFO L225 Difference]: With dead ends: 92 [2024-10-11 17:57:06,066 INFO L226 Difference]: Without dead ends: 92 [2024-10-11 17:57:06,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:57:06,067 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 7 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:06,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 212 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-11 17:57:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-11 17:57:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 45 states have (on average 2.066666666666667) internal successors, (93), 88 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-10-11 17:57:06,077 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 6 [2024-10-11 17:57:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:06,077 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-10-11 17:57:06,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2024-10-11 17:57:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-10-11 17:57:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 17:57:06,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:06,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:06,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:57:06,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:06,279 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:06,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:06,280 INFO L85 PathProgramCache]: Analyzing trace with hash 656576487, now seen corresponding path program 1 times [2024-10-11 17:57:06,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:06,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145388463] [2024-10-11 17:57:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:06,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:06,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:06,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:06,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145388463] [2024-10-11 17:57:06,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145388463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:06,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:06,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 17:57:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107346093] [2024-10-11 17:57:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:06,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:57:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:57:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 17:57:06,577 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:06,764 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-10-11 17:57:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:57:06,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-11 17:57:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:06,765 INFO L225 Difference]: With dead ends: 89 [2024-10-11 17:57:06,765 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 17:57:06,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 17:57:06,766 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 10 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:06,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 327 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 17:57:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-11 17:57:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 45 states have (on average 2.0) internal successors, (90), 85 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2024-10-11 17:57:06,776 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 21 [2024-10-11 17:57:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:06,777 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2024-10-11 17:57:06,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2024-10-11 17:57:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 17:57:06,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:06,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:06,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 17:57:06,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:06,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash 656576488, now seen corresponding path program 1 times [2024-10-11 17:57:06,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:06,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145803670] [2024-10-11 17:57:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:06,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:06,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913322004] [2024-10-11 17:57:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:06,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:06,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:06,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:57:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:06,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 17:57:06,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:06,904 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 [2024-10-11 17:57:06,922 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 [2024-10-11 17:57:07,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:07,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:07,190 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:57:07,191 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 [2024-10-11 17:57:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:07,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:07,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145803670] [2024-10-11 17:57:07,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:07,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913322004] [2024-10-11 17:57:07,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913322004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:07,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:07,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 17:57:07,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500358457] [2024-10-11 17:57:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:07,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:57:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:57:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 17:57:07,212 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:07,533 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2024-10-11 17:57:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:57:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-11 17:57:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:07,534 INFO L225 Difference]: With dead ends: 86 [2024-10-11 17:57:07,534 INFO L226 Difference]: Without dead ends: 86 [2024-10-11 17:57:07,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-11 17:57:07,535 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 12 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:07,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 242 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 17:57:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-11 17:57:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-11 17:57:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 82 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2024-10-11 17:57:07,538 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 21 [2024-10-11 17:57:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:07,539 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2024-10-11 17:57:07,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2024-10-11 17:57:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 17:57:07,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:07,539 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:07,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:57:07,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:07,740 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:07,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash 793303676, now seen corresponding path program 1 times [2024-10-11 17:57:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:07,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786626011] [2024-10-11 17:57:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:07,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:07,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:08,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:08,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786626011] [2024-10-11 17:57:08,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786626011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138947017] [2024-10-11 17:57:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:08,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:08,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:57:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:57:08,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:08,115 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 [2024-10-11 17:57:08,160 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= |c_#valid| (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| (select |c_#valid| |calloc_model_~ptr~0#1.base|))))) is different from true [2024-10-11 17:57:08,188 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:57:08,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:57:08,201 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:57:08,202 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 [2024-10-11 17:57:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-10-11 17:57:08,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138947017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:08,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2024-10-11 17:57:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829231155] [2024-10-11 17:57:08,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:08,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 17:57:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:08,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 17:57:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2024-10-11 17:57:08,292 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:08,544 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-10-11 17:57:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:57:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-10-11 17:57:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:08,546 INFO L225 Difference]: With dead ends: 85 [2024-10-11 17:57:08,546 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 17:57:08,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=281, Unknown=1, NotChecked=34, Total=380 [2024-10-11 17:57:08,547 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:08,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 366 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 385 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2024-10-11 17:57:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 17:57:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-11 17:57:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 79 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-10-11 17:57:08,551 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 24 [2024-10-11 17:57:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:08,551 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-10-11 17:57:08,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-10-11 17:57:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 17:57:08,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:08,551 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:08,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 17:57:08,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:08,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:08,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 793303677, now seen corresponding path program 1 times [2024-10-11 17:57:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236196672] [2024-10-11 17:57:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:09,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:09,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236196672] [2024-10-11 17:57:09,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236196672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:09,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:09,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 17:57:09,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692943793] [2024-10-11 17:57:09,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:09,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:57:09,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:57:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:57:09,153 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:09,334 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2024-10-11 17:57:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:57:09,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-10-11 17:57:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:09,336 INFO L225 Difference]: With dead ends: 89 [2024-10-11 17:57:09,336 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 17:57:09,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:57:09,337 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:09,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 243 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:09,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 17:57:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-10-11 17:57:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 81 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2024-10-11 17:57:09,345 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 24 [2024-10-11 17:57:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:09,346 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2024-10-11 17:57:09,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2024-10-11 17:57:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 17:57:09,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:09,349 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:09,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:57:09,349 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:09,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash 275556089, now seen corresponding path program 1 times [2024-10-11 17:57:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:09,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396556411] [2024-10-11 17:57:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:09,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396556411] [2024-10-11 17:57:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396556411] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661332502] [2024-10-11 17:57:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:09,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:09,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:09,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:09,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:57:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 17:57:09,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:09,907 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 [2024-10-11 17:57:09,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 17:57:23,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:23,463 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 [2024-10-11 17:57:23,475 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:57:23,475 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 [2024-10-11 17:57:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:23,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661332502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:32,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:57:32,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2024-10-11 17:57:32,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479309531] [2024-10-11 17:57:32,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:32,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 17:57:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 17:57:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=511, Unknown=5, NotChecked=0, Total=600 [2024-10-11 17:57:32,085 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 25 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 17:57:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:53,653 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2024-10-11 17:57:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 17:57:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2024-10-11 17:57:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:53,654 INFO L225 Difference]: With dead ends: 98 [2024-10-11 17:57:53,654 INFO L226 Difference]: Without dead ends: 90 [2024-10-11 17:57:53,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=141, Invalid=779, Unknown=10, NotChecked=0, Total=930 [2024-10-11 17:57:53,655 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 13 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:53,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 436 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 17:57:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-10-11 17:57:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2024-10-11 17:57:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 84 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-10-11 17:57:53,659 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 25 [2024-10-11 17:57:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:53,659 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-10-11 17:57:53,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 17:57:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-10-11 17:57:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 17:57:53,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:53,660 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:53,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:57:53,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 17:57:53,865 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:53,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1075190141, now seen corresponding path program 2 times [2024-10-11 17:57:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125922413] [2024-10-11 17:57:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114231688] [2024-10-11 17:57:53,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:57:53,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:53,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:53,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:53,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:57:54,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:57:54,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:57:54,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-11 17:57:54,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:54,030 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 [2024-10-11 17:57:54,039 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 [2024-10-11 17:57:54,378 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-11 17:57:54,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-11 17:57:54,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:54,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:54,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:54,472 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-11 17:57:54,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-11 17:57:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:57:54,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:54,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:54,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125922413] [2024-10-11 17:57:54,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114231688] [2024-10-11 17:57:54,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114231688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:54,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:57:54,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-11 17:57:54,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128446171] [2024-10-11 17:57:54,712 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:54,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 17:57:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:54,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 17:57:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-10-11 17:57:54,713 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 14 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:55,330 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2024-10-11 17:57:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 17:57:55,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-10-11 17:57:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:55,332 INFO L225 Difference]: With dead ends: 85 [2024-10-11 17:57:55,332 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 17:57:55,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:57:55,333 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 25 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:55,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 308 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 17:57:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 17:57:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-10-11 17:57:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 49 states have (on average 1.816326530612245) internal successors, (89), 81 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2024-10-11 17:57:55,337 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 28 [2024-10-11 17:57:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:55,338 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2024-10-11 17:57:55,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2024-10-11 17:57:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 17:57:55,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:55,338 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:55,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 17:57:55,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:55,543 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:55,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1400920155, now seen corresponding path program 1 times [2024-10-11 17:57:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079192472] [2024-10-11 17:57:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:57:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079192472] [2024-10-11 17:57:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079192472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:56,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 17:57:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751791740] [2024-10-11 17:57:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:56,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 17:57:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 17:57:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:57:56,046 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:56,341 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2024-10-11 17:57:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:57:56,341 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2024-10-11 17:57:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:56,342 INFO L225 Difference]: With dead ends: 105 [2024-10-11 17:57:56,342 INFO L226 Difference]: Without dead ends: 105 [2024-10-11 17:57:56,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-10-11 17:57:56,343 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 123 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:56,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 327 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-11 17:57:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2024-10-11 17:57:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.8076923076923077) internal successors, (94), 82 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-10-11 17:57:56,350 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 32 [2024-10-11 17:57:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:56,350 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-10-11 17:57:56,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-10-11 17:57:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 17:57:56,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:56,351 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:56,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 17:57:56,351 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:56,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1400920154, now seen corresponding path program 1 times [2024-10-11 17:57:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:56,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671568074] [2024-10-11 17:57:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:56,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:56,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:56,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:57,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671568074] [2024-10-11 17:57:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671568074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598838181] [2024-10-11 17:57:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:57,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:57,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:57,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:57:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 17:57:57,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:57,305 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| (select |c_#length| |calloc_model_~ptr~0#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| (select |c_#valid| |calloc_model_~ptr~0#1.base|))))) is different from true [2024-10-11 17:57:57,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:57,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:57,355 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:57:57,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:57:57,395 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| (select |c_#length| |calloc_model_~ptr~0#1.base|)) |c_#length|))) is different from true [2024-10-11 17:57:57,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:57,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:57,468 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-11 17:57:57,468 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 14 treesize of output 13 [2024-10-11 17:57:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 8 not checked. [2024-10-11 17:57:57,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598838181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:57,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:57,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2024-10-11 17:57:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863921404] [2024-10-11 17:57:57,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:57,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:57:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:57:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=467, Unknown=2, NotChecked=90, Total=650 [2024-10-11 17:57:57,726 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 17:57:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:58,275 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2024-10-11 17:57:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:57:58,276 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-10-11 17:57:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:58,277 INFO L225 Difference]: With dead ends: 104 [2024-10-11 17:57:58,277 INFO L226 Difference]: Without dead ends: 104 [2024-10-11 17:57:58,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=919, Unknown=2, NotChecked=130, Total=1260 [2024-10-11 17:57:58,278 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 126 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:58,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 370 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 526 Invalid, 0 Unknown, 203 Unchecked, 0.3s Time] [2024-10-11 17:57:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-11 17:57:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2024-10-11 17:57:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.7307692307692308) internal successors, (90), 80 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2024-10-11 17:57:58,281 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2024-10-11 17:57:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:58,281 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2024-10-11 17:57:58,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 17:57:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2024-10-11 17:57:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 17:57:58,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:58,282 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:58,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 17:57:58,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 17:57:58,483 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:58,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1717911226, now seen corresponding path program 1 times [2024-10-11 17:57:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:58,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370544118] [2024-10-11 17:57:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:58,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:57:58,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:58,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370544118] [2024-10-11 17:57:58,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370544118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:58,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:58,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 17:57:58,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895194018] [2024-10-11 17:57:58,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:58,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:57:58,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:58,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:57:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:57:58,649 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:58,858 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2024-10-11 17:57:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:57:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-10-11 17:57:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:58,859 INFO L225 Difference]: With dead ends: 129 [2024-10-11 17:57:58,859 INFO L226 Difference]: Without dead ends: 129 [2024-10-11 17:57:58,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 17:57:58,860 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 42 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:58,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 230 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-10-11 17:57:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 84. [2024-10-11 17:57:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 80 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-10-11 17:57:58,863 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 37 [2024-10-11 17:57:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:58,863 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-10-11 17:57:58,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-10-11 17:57:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 17:57:58,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:58,864 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:58,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 17:57:58,864 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:58,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:58,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1717911227, now seen corresponding path program 1 times [2024-10-11 17:57:58,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317660938] [2024-10-11 17:57:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:59,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:59,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:59,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317660938] [2024-10-11 17:57:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317660938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578478402] [2024-10-11 17:57:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:59,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:59,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:59,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:57:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:59,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 17:57:59,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:59,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:59,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:59,742 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:59,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-11 17:57:59,745 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:59,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-10-11 17:57:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:59,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:59,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2024-10-11 17:57:59,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2024-10-11 17:57:59,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:59,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:59,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:57:59,932 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 25 treesize of output 29 [2024-10-11 17:58:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:58:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578478402] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:00,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:58:00,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 32 [2024-10-11 17:58:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802595713] [2024-10-11 17:58:00,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:00,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 17:58:00,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 17:58:00,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 17:58:00,225 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 33 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 29 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:00,959 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2024-10-11 17:58:00,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 17:58:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 29 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2024-10-11 17:58:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:00,960 INFO L225 Difference]: With dead ends: 124 [2024-10-11 17:58:00,960 INFO L226 Difference]: Without dead ends: 124 [2024-10-11 17:58:00,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=295, Invalid=1867, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 17:58:00,961 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 192 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:00,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 711 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 17:58:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-11 17:58:00,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 84. [2024-10-11 17:58:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 80 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:58:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2024-10-11 17:58:00,964 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 37 [2024-10-11 17:58:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:00,964 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2024-10-11 17:58:00,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 29 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:58:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2024-10-11 17:58:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 17:58:00,965 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:00,965 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:00,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 17:58:01,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:01,166 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:58:01,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1645328753, now seen corresponding path program 1 times [2024-10-11 17:58:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364056606] [2024-10-11 17:58:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:01,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:58:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:58:01,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:01,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364056606] [2024-10-11 17:58:01,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364056606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:01,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787969363] [2024-10-11 17:58:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:01,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:01,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:01,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:01,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:58:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 17:58:01,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:02,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:58:02,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:58:02,220 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:58:02,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-11 17:58:02,224 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:58:02,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-10-11 17:58:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 17:58:02,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:02,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2024-10-11 17:58:02,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-10-11 17:58:02,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:58:02,507 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 22 treesize of output 26 [2024-10-11 17:58:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:58:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787969363] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:02,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:02,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15, 10] total 33 [2024-10-11 17:58:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781034727] [2024-10-11 17:58:02,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:02,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 17:58:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:02,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 17:58:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 17:58:02,732 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:58:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:03,054 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2024-10-11 17:58:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:58:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-11 17:58:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:03,055 INFO L225 Difference]: With dead ends: 123 [2024-10-11 17:58:03,055 INFO L226 Difference]: Without dead ends: 123 [2024-10-11 17:58:03,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1660, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 17:58:03,056 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 229 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:03,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 218 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-11 17:58:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2024-10-11 17:58:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 81 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:58:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2024-10-11 17:58:03,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 39 [2024-10-11 17:58:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:03,061 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2024-10-11 17:58:03,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:58:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2024-10-11 17:58:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 17:58:03,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:03,062 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:03,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 17:58:03,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 17:58:03,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:58:03,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1645328752, now seen corresponding path program 1 times [2024-10-11 17:58:03,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673970988] [2024-10-11 17:58:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:03,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:03,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:58:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:58:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:03,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673970988] [2024-10-11 17:58:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673970988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:58:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638292406] [2024-10-11 17:58:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:03,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:58:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:58:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:58:03,359 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:58:03,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:03,469 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2024-10-11 17:58:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:58:03,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2024-10-11 17:58:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:03,470 INFO L225 Difference]: With dead ends: 96 [2024-10-11 17:58:03,470 INFO L226 Difference]: Without dead ends: 96 [2024-10-11 17:58:03,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:58:03,470 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 16 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:03,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 203 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:58:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-11 17:58:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2024-10-11 17:58:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 80 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:58:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2024-10-11 17:58:03,473 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 39 [2024-10-11 17:58:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:03,473 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2024-10-11 17:58:03,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:58:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2024-10-11 17:58:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 17:58:03,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:03,474 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:03,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 17:58:03,474 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:58:03,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -534413735, now seen corresponding path program 1 times [2024-10-11 17:58:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074780533] [2024-10-11 17:58:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:03,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:03,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:03,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:58:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:58:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074780533] [2024-10-11 17:58:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074780533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522523284] [2024-10-11 17:58:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:04,117 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:04,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:58:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:04,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-11 17:58:04,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:04,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-11 17:58:04,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 15 [2024-10-11 17:58:04,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:58:04,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:58:04,887 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:58:04,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-10-11 17:58:04,891 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:58:04,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-10-11 17:58:04,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-11 17:58:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:58:04,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:05,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2024-10-11 17:58:05,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 121 [2024-10-11 17:58:17,694 INFO L349 Elim1Store]: treesize reduction 11, result has 89.5 percent of original size [2024-10-11 17:58:17,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 384 treesize of output 447