./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0235-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:41:13,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:41:14,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:41:14,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:41:14,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:41:14,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:41:14,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:41:14,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:41:14,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:41:14,070 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:41:14,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:41:14,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:41:14,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:41:14,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:41:14,071 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:41:14,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:41:14,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:41:14,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:41:14,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:41:14,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:41:14,076 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:41:14,077 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:41:14,077 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:41:14,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:41:14,077 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:41:14,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:41:14,078 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:41:14,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:41:14,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:41:14,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:41:14,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:41:14,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:41:14,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:41:14,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:41:14,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:41:14,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:41:14,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:41:14,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:41:14,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:41:14,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:41:14,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:41:14,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:41:14,082 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2024-11-22 18:41:14,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:41:14,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:41:14,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:41:14,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:41:14,300 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:41:14,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-1.i [2024-11-22 18:41:15,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:41:15,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:41:15,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-1.i [2024-11-22 18:41:15,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75663b6ec/2baadf281f854e79ac24921c8b0c95e3/FLAG8a48d55f3 [2024-11-22 18:41:15,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75663b6ec/2baadf281f854e79ac24921c8b0c95e3 [2024-11-22 18:41:15,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:41:15,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:41:15,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:41:15,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:41:15,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:41:15,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:41:15" (1/1) ... [2024-11-22 18:41:15,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214ccdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:15, skipping insertion in model container [2024-11-22 18:41:15,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:41:15" (1/1) ... [2024-11-22 18:41:16,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:41:16,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:41:16,325 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:41:16,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:41:16,416 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:41:16,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16 WrapperNode [2024-11-22 18:41:16,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:41:16,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:41:16,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:41:16,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:41:16,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,455 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 240 [2024-11-22 18:41:16,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:41:16,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:41:16,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:41:16,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:41:16,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,490 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 9, 26]. 70 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-11-22 18:41:16,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:41:16,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:41:16,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:41:16,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:41:16,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (1/1) ... [2024-11-22 18:41:16,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:41:16,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:16,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 18:41:16,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 18:41:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-22 18:41:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 18:41:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2024-11-22 18:41:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2024-11-22 18:41:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 18:41:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 18:41:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 18:41:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:41:16,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:41:16,687 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:41:16,690 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:41:17,163 INFO L? ?]: Removed 203 outVars from TransFormulas that were not future-live. [2024-11-22 18:41:17,164 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:41:17,181 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:41:17,182 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-22 18:41:17,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:41:17 BoogieIcfgContainer [2024-11-22 18:41:17,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:41:17,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:41:17,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:41:17,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:41:17,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:41:15" (1/3) ... [2024-11-22 18:41:17,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa1b2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:41:17, skipping insertion in model container [2024-11-22 18:41:17,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:16" (2/3) ... [2024-11-22 18:41:17,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa1b2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:41:17, skipping insertion in model container [2024-11-22 18:41:17,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:41:17" (3/3) ... [2024-11-22 18:41:17,190 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2024-11-22 18:41:17,202 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:41:17,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2024-11-22 18:41:17,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:41:17,249 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;@1c1adfd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:41:17,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2024-11-22 18:41:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 18:41:17,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:17,258 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 18:41:17,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:17,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 7887302, now seen corresponding path program 1 times [2024-11-22 18:41:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86496715] [2024-11-22 18:41:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:41:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86496715] [2024-11-22 18:41:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86496715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:41:17,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:41:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:41:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860812555] [2024-11-22 18:41:17,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:41:17,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:41:17,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:41:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:41:17,417 INFO L87 Difference]: Start difference. First operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:41:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:17,455 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2024-11-22 18:41:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:41:17,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-22 18:41:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:17,487 INFO L225 Difference]: With dead ends: 233 [2024-11-22 18:41:17,487 INFO L226 Difference]: Without dead ends: 231 [2024-11-22 18:41:17,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:41:17,494 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:17,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:41:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-22 18:41:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-22 18:41:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 217 states have internal predecessors, (238), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2024-11-22 18:41:17,573 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 4 [2024-11-22 18:41:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:17,576 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2024-11-22 18:41:17,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:41:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2024-11-22 18:41:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:41:17,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:17,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:41:17,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:41:17,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:17,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:17,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1014370765, now seen corresponding path program 1 times [2024-11-22 18:41:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:17,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877365691] [2024-11-22 18:41:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:41:17,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877365691] [2024-11-22 18:41:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877365691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:41:17,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:41:17,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:41:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254031730] [2024-11-22 18:41:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:41:17,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:41:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:41:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:41:17,722 INFO L87 Difference]: Start difference. First operand 231 states and 260 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:41:17,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:17,855 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2024-11-22 18:41:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:41:17,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-22 18:41:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:17,857 INFO L225 Difference]: With dead ends: 230 [2024-11-22 18:41:17,859 INFO L226 Difference]: Without dead ends: 230 [2024-11-22 18:41:17,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:41:17,860 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:17,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 427 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:41:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-22 18:41:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-11-22 18:41:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 133 states have (on average 1.781954887218045) internal successors, (237), 216 states have internal predecessors, (237), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2024-11-22 18:41:17,882 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 6 [2024-11-22 18:41:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:17,882 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2024-11-22 18:41:17,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:41:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2024-11-22 18:41:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:41:17,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:17,883 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:17,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:41:17,883 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:17,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1380722403, now seen corresponding path program 1 times [2024-11-22 18:41:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467617605] [2024-11-22 18:41:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 18:41:17,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048099360] [2024-11-22 18:41:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:17,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:17,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:17,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:17,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:41:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:18,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 18:41:18,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:18,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 18:41:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:41:18,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:41:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467617605] [2024-11-22 18:41:18,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 18:41:18,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048099360] [2024-11-22 18:41:18,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048099360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:41:18,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:41:18,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:41:18,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615226480] [2024-11-22 18:41:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:41:18,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:41:18,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:41:18,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:41:18,124 INFO L87 Difference]: Start difference. First operand 230 states and 259 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:41:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:18,255 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2024-11-22 18:41:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:41:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:41:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:18,257 INFO L225 Difference]: With dead ends: 239 [2024-11-22 18:41:18,257 INFO L226 Difference]: Without dead ends: 239 [2024-11-22 18:41:18,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:41:18,258 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 11 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:18,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 678 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:41:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-22 18:41:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-11-22 18:41:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 141 states have (on average 1.7446808510638299) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2024-11-22 18:41:18,268 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 7 [2024-11-22 18:41:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:18,269 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2024-11-22 18:41:18,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:41:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2024-11-22 18:41:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 18:41:18,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:18,271 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:18,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 18:41:18,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:18,476 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:18,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash -282348366, now seen corresponding path program 1 times [2024-11-22 18:41:18,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061507001] [2024-11-22 18:41:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:18,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 18:41:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236133000] [2024-11-22 18:41:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:18,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:18,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:18,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:18,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:41:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:18,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-22 18:41:18,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-22 18:41:18,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:41:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061507001] [2024-11-22 18:41:18,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 18:41:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236133000] [2024-11-22 18:41:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236133000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:41:18,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:41:18,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:41:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628378337] [2024-11-22 18:41:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:41:18,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:41:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:41:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:41:18,763 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 18:41:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:18,796 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2024-11-22 18:41:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:41:18,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-22 18:41:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:18,798 INFO L225 Difference]: With dead ends: 251 [2024-11-22 18:41:18,798 INFO L226 Difference]: Without dead ends: 241 [2024-11-22 18:41:18,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:41:18,799 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 2 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:18,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 750 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:41:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-22 18:41:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2024-11-22 18:41:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 143 states have (on average 1.7342657342657342) internal successors, (248), 226 states have internal predecessors, (248), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2024-11-22 18:41:18,807 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 66 [2024-11-22 18:41:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:18,808 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2024-11-22 18:41:18,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 18:41:18,808 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2024-11-22 18:41:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-22 18:41:18,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:18,809 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:18,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 18:41:19,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 18:41:19,014 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:19,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash -403824716, now seen corresponding path program 1 times [2024-11-22 18:41:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579953590] [2024-11-22 18:41:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 18:41:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819205608] [2024-11-22 18:41:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:19,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:19,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:19,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:41:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:19,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 18:41:19,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:19,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-22 18:41:19,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 18:41:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 58 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-22 18:41:19,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:41:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-22 18:41:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579953590] [2024-11-22 18:41:19,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 18:41:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819205608] [2024-11-22 18:41:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819205608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:41:19,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:41:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-22 18:41:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009478841] [2024-11-22 18:41:19,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:41:19,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 18:41:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 18:41:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:41:19,731 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 18:41:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:20,018 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2024-11-22 18:41:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 18:41:20,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2024-11-22 18:41:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:20,019 INFO L225 Difference]: With dead ends: 260 [2024-11-22 18:41:20,019 INFO L226 Difference]: Without dead ends: 245 [2024-11-22 18:41:20,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:41:20,020 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 22 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:20,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1672 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:41:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-22 18:41:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-11-22 18:41:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 147 states have (on average 1.7142857142857142) internal successors, (252), 230 states have internal predecessors, (252), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 274 transitions. [2024-11-22 18:41:20,032 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 274 transitions. Word has length 71 [2024-11-22 18:41:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:20,032 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 274 transitions. [2024-11-22 18:41:20,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 18:41:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 274 transitions. [2024-11-22 18:41:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-22 18:41:20,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:20,034 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:20,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 18:41:20,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:20,239 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:20,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1345968334, now seen corresponding path program 2 times [2024-11-22 18:41:20,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:20,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348439829] [2024-11-22 18:41:20,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:41:20,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:20,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:41:20,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 18:41:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773857517] [2024-11-22 18:41:20,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:41:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:20,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:20,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:41:20,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:41:20,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:41:20,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 18:41:20,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:20,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 18:41:20,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 18:41:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 255 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 18:41:20,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:41:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 79 proven. 74 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-22 18:41:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348439829] [2024-11-22 18:41:21,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 18:41:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773857517] [2024-11-22 18:41:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773857517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:41:21,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:41:21,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-22 18:41:21,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481786839] [2024-11-22 18:41:21,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:41:21,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 18:41:21,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:21,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 18:41:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-22 18:41:21,192 INFO L87 Difference]: Start difference. First operand 245 states and 274 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 18:41:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:21,755 INFO L93 Difference]: Finished difference Result 267 states and 300 transitions. [2024-11-22 18:41:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 18:41:21,755 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2024-11-22 18:41:21,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:21,756 INFO L225 Difference]: With dead ends: 267 [2024-11-22 18:41:21,757 INFO L226 Difference]: Without dead ends: 252 [2024-11-22 18:41:21,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 18:41:21,758 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 29 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:21,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2856 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:41:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-22 18:41:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-22 18:41:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 154 states have (on average 1.6818181818181819) internal successors, (259), 237 states have internal predecessors, (259), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 281 transitions. [2024-11-22 18:41:21,763 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 281 transitions. Word has length 86 [2024-11-22 18:41:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:21,763 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 281 transitions. [2024-11-22 18:41:21,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 18:41:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 281 transitions. [2024-11-22 18:41:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-22 18:41:21,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:21,765 INFO L215 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:21,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 18:41:21,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:21,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:21,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1501472334, now seen corresponding path program 3 times [2024-11-22 18:41:21,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:21,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285261278] [2024-11-22 18:41:21,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:41:21,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:22,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-22 18:41:22,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-22 18:41:22,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19162542] [2024-11-22 18:41:22,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:41:22,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:22,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:22,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:22,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:41:22,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 18:41:22,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:41:22,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 18:41:22,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:22,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 18:41:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2024-11-22 18:41:22,623 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:41:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285261278] [2024-11-22 18:41:22,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 18:41:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19162542] [2024-11-22 18:41:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19162542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:41:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:41:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:41:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388075091] [2024-11-22 18:41:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:41:22,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:41:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:41:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:41:22,625 INFO L87 Difference]: Start difference. First operand 252 states and 281 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 18:41:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:22,718 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2024-11-22 18:41:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:41:22,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2024-11-22 18:41:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:22,721 INFO L225 Difference]: With dead ends: 251 [2024-11-22 18:41:22,721 INFO L226 Difference]: Without dead ends: 251 [2024-11-22 18:41:22,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:41:22,724 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 11 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:22,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 700 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:41:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-22 18:41:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-22 18:41:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 154 states have (on average 1.6753246753246753) internal successors, (258), 236 states have internal predecessors, (258), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 280 transitions. [2024-11-22 18:41:22,731 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 280 transitions. Word has length 106 [2024-11-22 18:41:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:22,732 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 280 transitions. [2024-11-22 18:41:22,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 18:41:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 280 transitions. [2024-11-22 18:41:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 18:41:22,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:22,736 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:22,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 18:41:22,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:22,941 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:22,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1160475964, now seen corresponding path program 1 times [2024-11-22 18:41:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901315851] [2024-11-22 18:41:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 658 proven. 4 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-22 18:41:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:23,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901315851] [2024-11-22 18:41:23,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901315851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:41:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164378892] [2024-11-22 18:41:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:23,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:23,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:23,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:23,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:41:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:24,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 18:41:24,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:24,225 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-11-22 18:41:24,266 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-22 18:41:24,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-22 18:41:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 60 not checked. [2024-11-22 18:41:24,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:41:24,473 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 18:41:24,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-22 18:41:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-22 18:41:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164378892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:41:24,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:41:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2024-11-22 18:41:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56445216] [2024-11-22 18:41:24,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:41:24,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 18:41:24,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:41:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 18:41:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2024-11-22 18:41:24,492 INFO L87 Difference]: Start difference. First operand 251 states and 280 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 18:41:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:41:25,088 INFO L93 Difference]: Finished difference Result 350 states and 398 transitions. [2024-11-22 18:41:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:41:25,089 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2024-11-22 18:41:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:41:25,092 INFO L225 Difference]: With dead ends: 350 [2024-11-22 18:41:25,092 INFO L226 Difference]: Without dead ends: 350 [2024-11-22 18:41:25,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=277, Unknown=1, NotChecked=34, Total=380 [2024-11-22 18:41:25,093 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 237 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:41:25,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1638 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 883 Invalid, 0 Unknown, 368 Unchecked, 0.5s Time] [2024-11-22 18:41:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-22 18:41:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 249. [2024-11-22 18:41:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 154 states have (on average 1.6623376623376624) internal successors, (256), 234 states have internal predecessors, (256), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:41:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2024-11-22 18:41:25,101 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 118 [2024-11-22 18:41:25,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:41:25,101 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2024-11-22 18:41:25,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 18:41:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2024-11-22 18:41:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 18:41:25,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:41:25,106 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:41:25,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 18:41:25,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:25,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:41:25,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:41:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1160475965, now seen corresponding path program 1 times [2024-11-22 18:41:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:41:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627120963] [2024-11-22 18:41:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:41:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 97 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2024-11-22 18:41:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:41:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627120963] [2024-11-22 18:41:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627120963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:41:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992888617] [2024-11-22 18:41:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:41:27,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:41:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:41:27,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:41:27,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 18:41:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:41:28,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-22 18:41:28,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:41:28,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 18:42:05,532 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-22 18:42:05,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:42:05,588 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 [2024-11-22 18:42:05,596 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 18:42:05,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 18:42:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 385 proven. 588 refuted. 0 times theorem prover too weak. 265 trivial. 157 not checked. [2024-11-22 18:42:05,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:42:05,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992888617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:42:05,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:42:05,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29] total 40 [2024-11-22 18:42:05,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034093268] [2024-11-22 18:42:05,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:42:05,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 18:42:05,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:42:05,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 18:42:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1582, Unknown=10, NotChecked=80, Total=1806 [2024-11-22 18:42:05,755 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 41 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 18:42:09,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 18:42:15,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 18:42:19,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 18:42:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:42:21,881 INFO L93 Difference]: Finished difference Result 358 states and 411 transitions. [2024-11-22 18:42:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 18:42:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 118 [2024-11-22 18:42:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:42:21,883 INFO L225 Difference]: With dead ends: 358 [2024-11-22 18:42:21,883 INFO L226 Difference]: Without dead ends: 358 [2024-11-22 18:42:21,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=289, Invalid=3011, Unknown=10, NotChecked=112, Total=3422 [2024-11-22 18:42:21,884 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 255 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 5092 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 5475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5092 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-22 18:42:21,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 2006 Invalid, 5475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 5092 Invalid, 3 Unknown, 366 Unchecked, 14.9s Time] [2024-11-22 18:42:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-22 18:42:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 247. [2024-11-22 18:42:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 154 states have (on average 1.6493506493506493) internal successors, (254), 232 states have internal predecessors, (254), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:42:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2024-11-22 18:42:21,890 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 118 [2024-11-22 18:42:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:42:21,890 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2024-11-22 18:42:21,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 18:42:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2024-11-22 18:42:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 18:42:21,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:42:21,891 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:42:21,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 18:42:22,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:42:22,096 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:42:22,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:42:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1474088099, now seen corresponding path program 1 times [2024-11-22 18:42:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:42:22,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783969360] [2024-11-22 18:42:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:42:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:42:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:42:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 833 proven. 96 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2024-11-22 18:42:23,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:42:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783969360] [2024-11-22 18:42:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783969360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:42:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963209400] [2024-11-22 18:42:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:42:23,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:42:23,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:42:23,086 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:42:23,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 18:42:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:42:23,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 18:42:23,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:42:23,504 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-11-22 18:42:23,528 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-22 18:42:23,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-22 18:42:23,574 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-22 18:42:23,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-22 18:42:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 147 not checked. [2024-11-22 18:42:23,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:42:23,900 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 18:42:23,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-22 18:42:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 149 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-11-22 18:42:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963209400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:42:23,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:42:23,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 22 [2024-11-22 18:42:23,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589012191] [2024-11-22 18:42:23,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:42:23,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 18:42:23,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:42:23,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 18:42:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2024-11-22 18:42:23,914 INFO L87 Difference]: Start difference. First operand 247 states and 276 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 18:42:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:42:24,808 INFO L93 Difference]: Finished difference Result 345 states and 393 transitions. [2024-11-22 18:42:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:42:24,808 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2024-11-22 18:42:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:42:24,809 INFO L225 Difference]: With dead ends: 345 [2024-11-22 18:42:24,809 INFO L226 Difference]: Without dead ends: 345 [2024-11-22 18:42:24,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=606, Unknown=1, NotChecked=50, Total=756 [2024-11-22 18:42:24,810 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 698 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 18:42:24,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 2655 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1564 Invalid, 0 Unknown, 363 Unchecked, 0.8s Time] [2024-11-22 18:42:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-22 18:42:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 244. [2024-11-22 18:42:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 154 states have (on average 1.62987012987013) internal successors, (251), 229 states have internal predecessors, (251), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:42:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 273 transitions. [2024-11-22 18:42:24,815 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 273 transitions. Word has length 120 [2024-11-22 18:42:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:42:24,815 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 273 transitions. [2024-11-22 18:42:24,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 18:42:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 273 transitions. [2024-11-22 18:42:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 18:42:24,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:42:24,816 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:42:24,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 18:42:25,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 18:42:25,018 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:42:25,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:42:25,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1474088098, now seen corresponding path program 1 times [2024-11-22 18:42:25,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:42:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573742915] [2024-11-22 18:42:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:42:25,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:42:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:42:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 246 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-11-22 18:42:26,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:42:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573742915] [2024-11-22 18:42:26,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573742915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:42:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489992040] [2024-11-22 18:42:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:42:26,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:42:26,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:42:26,965 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:42:26,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 18:42:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:42:27,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-22 18:42:27,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:42:27,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-22 18:42:35,896 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-22 18:42:36,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:42:36,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-22 18:42:36,415 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-22 18:42:36,416 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 [2024-11-22 18:42:36,445 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-22 18:42:36,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:42:36,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-22 18:42:36,506 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 18:42:36,507 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 11 treesize of output 11 [2024-11-22 18:42:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 425 proven. 568 refuted. 0 times theorem prover too weak. 129 trivial. 273 not checked. [2024-11-22 18:42:36,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:42:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489992040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:42:36,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:42:36,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36] total 57 [2024-11-22 18:42:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850475331] [2024-11-22 18:42:36,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:42:36,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-22 18:42:36,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:42:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-22 18:42:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=3116, Unknown=3, NotChecked=226, Total=3540 [2024-11-22 18:42:36,760 INFO L87 Difference]: Start difference. First operand 244 states and 273 transitions. Second operand has 58 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 55 states have internal predecessors, (113), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 18:42:40,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-22 18:42:46,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:42:46,107 INFO L93 Difference]: Finished difference Result 350 states and 401 transitions. [2024-11-22 18:42:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 18:42:46,108 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 55 states have internal predecessors, (113), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) Word has length 120 [2024-11-22 18:42:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:42:46,109 INFO L225 Difference]: With dead ends: 350 [2024-11-22 18:42:46,109 INFO L226 Difference]: Without dead ends: 350 [2024-11-22 18:42:46,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=383, Invalid=5024, Unknown=3, NotChecked=290, Total=5700 [2024-11-22 18:42:46,110 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 279 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 6620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 733 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-22 18:42:46,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1857 Invalid, 6620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5868 Invalid, 1 Unknown, 733 Unchecked, 7.8s Time] [2024-11-22 18:42:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-22 18:42:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 241. [2024-11-22 18:42:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 154 states have (on average 1.6103896103896105) internal successors, (248), 226 states have internal predecessors, (248), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:42:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2024-11-22 18:42:46,115 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 120 [2024-11-22 18:42:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:42:46,116 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2024-11-22 18:42:46,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 55 states have internal predecessors, (113), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 18:42:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2024-11-22 18:42:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-22 18:42:46,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:42:46,117 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:42:46,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 18:42:46,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:42:46,320 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-11-22 18:42:46,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:42:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1281234918, now seen corresponding path program 1 times [2024-11-22 18:42:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:42:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916258972] [2024-11-22 18:42:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:42:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:42:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat