./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0237.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0237.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:42:42,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:42:42,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:42:42,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:42:42,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:42:42,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:42:42,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:42:42,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:42:42,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:42:42,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:42:42,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:42:42,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:42:42,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:42:42,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:42:42,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:42:42,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:42:42,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:42:42,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:42:42,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:42:42,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:42:42,514 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:42:42,515 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:42:42,515 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:42:42,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:42:42,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:42:42,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:42:42,516 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:42:42,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:42:42,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:42:42,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:42:42,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:42:42,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:42:42,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:42:42,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:42:42,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:42:42,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:42:42,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:42:42,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:42:42,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:42:42,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:42:42,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:42:42,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:42:42,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea [2024-11-19 06:42:42,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:42:42,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:42:42,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:42:42,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:42:42,772 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:42:42,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0237.i [2024-11-19 06:42:44,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:42:44,449 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:42:44,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0237.i [2024-11-19 06:42:44,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498f374dc/16def656913447e9abe763ae8be44955/FLAG031b52ab1 [2024-11-19 06:42:44,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498f374dc/16def656913447e9abe763ae8be44955 [2024-11-19 06:42:44,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:42:44,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:42:44,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:42:44,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:42:44,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:42:44,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:44,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2f6c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44, skipping insertion in model container [2024-11-19 06:42:44,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:44,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:42:44,870 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:42:44,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:42:44,912 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:42:44,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:42:44,985 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:42:44,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44 WrapperNode [2024-11-19 06:42:44,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:42:44,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:42:44,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:42:44,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:42:44,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,039 INFO L138 Inliner]: procedures = 188, calls = 66, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 222 [2024-11-19 06:42:45,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:42:45,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:42:45,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:42:45,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:42:45,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,089 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 4, 32]. 84 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 18 writes are split as follows [0, 1, 17]. [2024-11-19 06:42:45,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:42:45,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:42:45,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:42:45,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:42:45,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (1/1) ... [2024-11-19 06:42:45,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:42:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:45,153 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) [2024-11-19 06:42:45,157 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 [2024-11-19 06:42:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:42:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:42:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:42:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 06:42:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-19 06:42:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 06:42:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:42:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:42:45,456 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:42:45,458 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:42:45,960 INFO L? ?]: Removed 225 outVars from TransFormulas that were not future-live. [2024-11-19 06:42:45,960 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:42:45,976 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:42:45,976 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-19 06:42:45,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:45 BoogieIcfgContainer [2024-11-19 06:42:45,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:42:45,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:42:45,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:42:45,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:42:45,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:44" (1/3) ... [2024-11-19 06:42:45,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a068ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:45, skipping insertion in model container [2024-11-19 06:42:45,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:44" (2/3) ... [2024-11-19 06:42:45,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a068ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:45, skipping insertion in model container [2024-11-19 06:42:45,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:45" (3/3) ... [2024-11-19 06:42:45,986 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0237.i [2024-11-19 06:42:46,003 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:42:46,003 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2024-11-19 06:42:46,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:42:46,056 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;@147e6057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:42:46,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2024-11-19 06:42:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 115 states have (on average 1.9478260869565218) internal successors, (224), 202 states have internal predecessors, (224), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 06:42:46,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:46,067 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 06:42:46,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:46,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1546406, now seen corresponding path program 1 times [2024-11-19 06:42:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290788746] [2024-11-19 06:42:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:42:46,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290788746] [2024-11-19 06:42:46,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290788746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:46,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:46,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:42:46,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782856703] [2024-11-19 06:42:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:46,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 06:42:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 06:42:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:42:46,230 INFO L87 Difference]: Start difference. First operand has 210 states, 115 states have (on average 1.9478260869565218) internal successors, (224), 202 states have internal predecessors, (224), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:42:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:46,263 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2024-11-19 06:42:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 06:42:46,265 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 [2024-11-19 06:42:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:46,273 INFO L225 Difference]: With dead ends: 210 [2024-11-19 06:42:46,274 INFO L226 Difference]: Without dead ends: 208 [2024-11-19 06:42:46,275 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 [2024-11-19 06:42:46,280 INFO L432 NwaCegarLoop]: 225 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, 225 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 [2024-11-19 06:42:46,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:42:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-19 06:42:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-19 06:42:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 114 states have (on average 1.8508771929824561) internal successors, (211), 200 states have internal predecessors, (211), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2024-11-19 06:42:46,338 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 4 [2024-11-19 06:42:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:46,338 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2024-11-19 06:42:46,339 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) [2024-11-19 06:42:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2024-11-19 06:42:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:42:46,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:46,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:42:46,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:42:46,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:46,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1481500665, now seen corresponding path program 1 times [2024-11-19 06:42:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505137173] [2024-11-19 06:42:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:42:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505137173] [2024-11-19 06:42:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505137173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:46,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:42:46,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003212560] [2024-11-19 06:42:46,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:46,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:42:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:42:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:42:46,514 INFO L87 Difference]: Start difference. First operand 208 states and 223 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) [2024-11-19 06:42:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:46,644 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2024-11-19 06:42:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:42:46,645 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 [2024-11-19 06:42:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:46,646 INFO L225 Difference]: With dead ends: 207 [2024-11-19 06:42:46,646 INFO L226 Difference]: Without dead ends: 207 [2024-11-19 06:42:46,646 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 [2024-11-19 06:42:46,647 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 4 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:46,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 351 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-19 06:42:46,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-19 06:42:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 114 states have (on average 1.8421052631578947) internal successors, (210), 199 states have internal predecessors, (210), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2024-11-19 06:42:46,668 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 6 [2024-11-19 06:42:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:46,668 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2024-11-19 06:42:46,668 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) [2024-11-19 06:42:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2024-11-19 06:42:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:42:46,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:46,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:46,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:42:46,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:46,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1318119607, now seen corresponding path program 1 times [2024-11-19 06:42:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959597308] [2024-11-19 06:42:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828335260] [2024-11-19 06:42:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:46,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:46,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:46,726 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) [2024-11-19 06:42:46,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:42:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:46,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:42:46,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:46,866 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 [2024-11-19 06:42:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:42:46,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959597308] [2024-11-19 06:42:46,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828335260] [2024-11-19 06:42:46,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828335260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:46,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:46,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:42:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764809428] [2024-11-19 06:42:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:46,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:42:46,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:42:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:42:46,902 INFO L87 Difference]: Start difference. First operand 207 states and 222 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) [2024-11-19 06:42:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:47,009 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2024-11-19 06:42:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:42:47,010 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 [2024-11-19 06:42:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:47,011 INFO L225 Difference]: With dead ends: 216 [2024-11-19 06:42:47,011 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 06:42:47,011 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 [2024-11-19 06:42:47,012 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 11 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:47,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 577 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 06:42:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-19 06:42:47,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.7950819672131149) internal successors, (219), 207 states have internal predecessors, (219), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2024-11-19 06:42:47,020 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 7 [2024-11-19 06:42:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:47,020 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2024-11-19 06:42:47,020 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) [2024-11-19 06:42:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2024-11-19 06:42:47,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:42:47,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:47,021 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:47,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:42:47,221 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 [2024-11-19 06:42:47,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:47,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1935357312, now seen corresponding path program 1 times [2024-11-19 06:42:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822516505] [2024-11-19 06:42:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759728339] [2024-11-19 06:42:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:47,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:47,277 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) [2024-11-19 06:42:47,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:42:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:47,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:42:47,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:47,383 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 [2024-11-19 06:42:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:42:47,399 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:47,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:47,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822516505] [2024-11-19 06:42:47,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759728339] [2024-11-19 06:42:47,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759728339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:47,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:47,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:42:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461099869] [2024-11-19 06:42:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:47,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:42:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:42:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:42:47,402 INFO L87 Difference]: Start difference. First operand 216 states and 231 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:42:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:47,516 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2024-11-19 06:42:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:42:47,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-19 06:42:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:47,518 INFO L225 Difference]: With dead ends: 225 [2024-11-19 06:42:47,518 INFO L226 Difference]: Without dead ends: 225 [2024-11-19 06:42:47,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:42:47,519 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 11 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:47,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 580 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-19 06:42:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2024-11-19 06:42:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 130 states have (on average 1.7538461538461538) internal successors, (228), 215 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2024-11-19 06:42:47,528 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 19 [2024-11-19 06:42:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:47,528 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2024-11-19 06:42:47,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:42:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2024-11-19 06:42:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 06:42:47,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:47,530 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] [2024-11-19 06:42:47,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:42:47,734 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 [2024-11-19 06:42:47,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:47,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash -537095444, now seen corresponding path program 1 times [2024-11-19 06:42:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:47,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349355784] [2024-11-19 06:42:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140566855] [2024-11-19 06:42:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:47,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:47,783 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) [2024-11-19 06:42:47,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:42:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:47,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 06:42:47,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:47,965 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 [2024-11-19 06:42:47,993 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 [2024-11-19 06:42:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 06:42:48,055 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:48,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:48,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349355784] [2024-11-19 06:42:48,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:48,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140566855] [2024-11-19 06:42:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140566855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:48,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:42:48,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543715771] [2024-11-19 06:42:48,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:48,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:42:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:42:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:42:48,057 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 06:42:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:48,172 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2024-11-19 06:42:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:42:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2024-11-19 06:42:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:48,174 INFO L225 Difference]: With dead ends: 243 [2024-11-19 06:42:48,174 INFO L226 Difference]: Without dead ends: 228 [2024-11-19 06:42:48,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:42:48,175 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 3 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:48,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 785 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-19 06:42:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-19 06:42:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 133 states have (on average 1.736842105263158) internal successors, (231), 218 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2024-11-19 06:42:48,180 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 66 [2024-11-19 06:42:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:48,181 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2024-11-19 06:42:48,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 06:42:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2024-11-19 06:42:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 06:42:48,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:48,182 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] [2024-11-19 06:42:48,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 06:42:48,382 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 [2024-11-19 06:42:48,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:48,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:48,384 INFO L85 PathProgramCache]: Analyzing trace with hash 988332756, now seen corresponding path program 1 times [2024-11-19 06:42:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:48,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311022870] [2024-11-19 06:42:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:48,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:48,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014272541] [2024-11-19 06:42:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:48,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:48,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:48,530 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) [2024-11-19 06:42:48,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:42:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:48,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 06:42:48,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:48,728 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 [2024-11-19 06:42:48,753 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 [2024-11-19 06:42:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 58 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-19 06:42:48,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-19 06:42:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:49,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311022870] [2024-11-19 06:42:49,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:49,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014272541] [2024-11-19 06:42:49,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014272541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:49,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:42:49,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-19 06:42:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984104359] [2024-11-19 06:42:49,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:49,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:42:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:42:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:42:49,051 INFO L87 Difference]: Start difference. First operand 228 states and 243 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) [2024-11-19 06:42:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:49,365 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2024-11-19 06:42:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:42:49,366 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 [2024-11-19 06:42:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:49,367 INFO L225 Difference]: With dead ends: 253 [2024-11-19 06:42:49,367 INFO L226 Difference]: Without dead ends: 233 [2024-11-19 06:42:49,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:42:49,368 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 22 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:49,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:42:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-19 06:42:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-19 06:42:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 138 states have (on average 1.710144927536232) internal successors, (236), 223 states have internal predecessors, (236), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2024-11-19 06:42:49,373 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 71 [2024-11-19 06:42:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:49,373 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2024-11-19 06:42:49,373 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) [2024-11-19 06:42:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2024-11-19 06:42:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-19 06:42:49,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:49,375 INFO L215 NwaCegarLoop]: trace histogram [18, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:49,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:42:49,575 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 [2024-11-19 06:42:49,576 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:49,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1006150804, now seen corresponding path program 2 times [2024-11-19 06:42:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437543561] [2024-11-19 06:42:49,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:42:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:49,774 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:42:49,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-19 06:42:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708381139] [2024-11-19 06:42:49,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:42:49,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:49,788 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) [2024-11-19 06:42:49,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:42:50,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:42:50,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:42:50,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-19 06:42:50,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:50,238 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 [2024-11-19 06:42:50,264 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 [2024-11-19 06:42:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 149 proven. 98 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-19 06:42:50,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-19 06:42:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437543561] [2024-11-19 06:42:50,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708381139] [2024-11-19 06:42:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708381139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:50,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:42:50,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-19 06:42:50,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193520890] [2024-11-19 06:42:50,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:50,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:42:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:42:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:42:50,649 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-11-19 06:42:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:51,343 INFO L93 Difference]: Finished difference Result 265 states and 288 transitions. [2024-11-19 06:42:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:42:51,344 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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 84 [2024-11-19 06:42:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:51,345 INFO L225 Difference]: With dead ends: 265 [2024-11-19 06:42:51,345 INFO L226 Difference]: Without dead ends: 245 [2024-11-19 06:42:51,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:42:51,346 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 49 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:51,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2254 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:42:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-19 06:42:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-11-19 06:42:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 150 states have (on average 1.6533333333333333) internal successors, (248), 235 states have internal predecessors, (248), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 260 transitions. [2024-11-19 06:42:51,355 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 260 transitions. Word has length 84 [2024-11-19 06:42:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:51,356 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 260 transitions. [2024-11-19 06:42:51,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-11-19 06:42:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 260 transitions. [2024-11-19 06:42:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 06:42:51,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:51,361 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-11-19 06:42:51,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 06:42:51,562 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 [2024-11-19 06:42:51,563 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:51,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash -871895496, now seen corresponding path program 3 times [2024-11-19 06:42:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429275784] [2024-11-19 06:42:51,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:42:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:52,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-19 06:42:52,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-19 06:42:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029276810] [2024-11-19 06:42:52,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:42:52,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:52,230 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) [2024-11-19 06:42:52,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:42:52,416 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:42:52,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:42:52,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:42:52,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:52,440 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 [2024-11-19 06:42:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2024-11-19 06:42:52,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:52,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429275784] [2024-11-19 06:42:52,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029276810] [2024-11-19 06:42:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029276810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:52,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:42:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848316849] [2024-11-19 06:42:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:52,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:42:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:42:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:42:52,459 INFO L87 Difference]: Start difference. First operand 245 states and 260 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) [2024-11-19 06:42:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:52,563 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2024-11-19 06:42:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:42:52,563 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 111 [2024-11-19 06:42:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:52,565 INFO L225 Difference]: With dead ends: 244 [2024-11-19 06:42:52,565 INFO L226 Difference]: Without dead ends: 244 [2024-11-19 06:42:52,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:42:52,566 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 11 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:52,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 587 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-19 06:42:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2024-11-19 06:42:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 150 states have (on average 1.6466666666666667) internal successors, (247), 234 states have internal predecessors, (247), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 259 transitions. [2024-11-19 06:42:52,572 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 259 transitions. Word has length 111 [2024-11-19 06:42:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:52,572 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 259 transitions. [2024-11-19 06:42:52,572 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) [2024-11-19 06:42:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 259 transitions. [2024-11-19 06:42:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 06:42:52,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:52,574 INFO L215 NwaCegarLoop]: trace histogram [50, 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] [2024-11-19 06:42:52,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:42:52,775 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 [2024-11-19 06:42:52,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:52,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1932555900, now seen corresponding path program 1 times [2024-11-19 06:42:52,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:52,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636041390] [2024-11-19 06:42:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:52,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 724 proven. 73 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2024-11-19 06:42:53,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:53,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636041390] [2024-11-19 06:42:53,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636041390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:53,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476583346] [2024-11-19 06:42:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:53,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:53,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:53,832 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) [2024-11-19 06:42:53,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:42:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:54,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 06:42:54,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:54,255 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 [2024-11-19 06:42:54,291 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:42:54,291 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 [2024-11-19 06:42:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 724 proven. 1 refuted. 0 times theorem prover too weak. 863 trivial. 72 not checked. [2024-11-19 06:42:54,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:54,488 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 06:42:54,488 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 [2024-11-19 06:42:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 724 proven. 73 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2024-11-19 06:42:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476583346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:54,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:42:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2024-11-19 06:42:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318189370] [2024-11-19 06:42:54,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:54,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:42:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:42:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-19 06:42:54,506 INFO L87 Difference]: Start difference. First operand 244 states and 259 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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) [2024-11-19 06:42:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:54,960 INFO L93 Difference]: Finished difference Result 240 states and 255 transitions. [2024-11-19 06:42:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:42:54,961 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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 123 [2024-11-19 06:42:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:54,962 INFO L225 Difference]: With dead ends: 240 [2024-11-19 06:42:54,962 INFO L226 Difference]: Without dead ends: 240 [2024-11-19 06:42:54,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=311, Unknown=1, NotChecked=36, Total=420 [2024-11-19 06:42:54,963 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 19 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:54,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1333 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 798 Invalid, 0 Unknown, 209 Unchecked, 0.4s Time] [2024-11-19 06:42:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-19 06:42:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-19 06:42:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 150 states have (on average 1.62) internal successors, (243), 230 states have internal predecessors, (243), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:42:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 255 transitions. [2024-11-19 06:42:54,968 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 255 transitions. Word has length 123 [2024-11-19 06:42:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:54,968 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 255 transitions. [2024-11-19 06:42:54,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 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) [2024-11-19 06:42:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 255 transitions. [2024-11-19 06:42:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 06:42:54,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:54,970 INFO L215 NwaCegarLoop]: trace histogram [50, 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] [2024-11-19 06:42:54,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:42:55,173 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 [2024-11-19 06:42:55,174 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:42:55,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:55,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1932555901, now seen corresponding path program 1 times [2024-11-19 06:42:55,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:55,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659670571] [2024-11-19 06:42:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:55,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188029203] [2024-11-19 06:42:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:55,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:55,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:55,404 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) [2024-11-19 06:42:55,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:43:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:43:00,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-19 06:43:00,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:43:00,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:43:00,263 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 [2024-11-19 06:43:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 340 proven. 15 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2024-11-19 06:43:00,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:43:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 0 proven. 350 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-11-19 06:43:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:43:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659670571] [2024-11-19 06:43:00,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:43:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188029203] [2024-11-19 06:43:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188029203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:43:00,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:43:00,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-19 06:43:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700456364] [2024-11-19 06:43:00,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:43:00,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:43:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:43:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:43:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:43:00,739 INFO L87 Difference]: Start difference. First operand 240 states and 255 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 06:43:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:43:01,338 INFO L93 Difference]: Finished difference Result 259 states and 275 transitions. [2024-11-19 06:43:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 06:43:01,339 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2024-11-19 06:43:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:43:01,340 INFO L225 Difference]: With dead ends: 259 [2024-11-19 06:43:01,340 INFO L226 Difference]: Without dead ends: 244 [2024-11-19 06:43:01,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:43:01,341 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 27 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:43:01,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2090 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:43:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-19 06:43:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2024-11-19 06:43:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 154 states have (on average 1.603896103896104) internal successors, (247), 234 states have internal predecessors, (247), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:43:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 259 transitions. [2024-11-19 06:43:01,347 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 259 transitions. Word has length 123 [2024-11-19 06:43:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:43:01,347 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 259 transitions. [2024-11-19 06:43:01,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 06:43:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 259 transitions. [2024-11-19 06:43:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-19 06:43:01,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:43:01,350 INFO L215 NwaCegarLoop]: trace histogram [54, 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] [2024-11-19 06:43:01,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:43:01,554 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 [2024-11-19 06:43:01,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:43:01,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:43:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash 627287167, now seen corresponding path program 2 times [2024-11-19 06:43:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:43:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220524958] [2024-11-19 06:43:01,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:43:01,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:43:01,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:43:01,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-19 06:43:01,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551226789] [2024-11-19 06:43:01,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:43:01,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:43:01,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:43:01,778 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) [2024-11-19 06:43:01,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:43:03,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:43:03,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:43:03,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-19 06:43:03,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:43:03,615 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 [2024-11-19 06:43:03,860 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 [2024-11-19 06:43:03,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:43:03,923 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 [2024-11-19 06:43:03,928 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:43:03,929 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 [2024-11-19 06:43:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 817 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 84 not checked. [2024-11-19 06:43:03,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:43:04,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:43:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220524958] [2024-11-19 06:43:04,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:43:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551226789] [2024-11-19 06:43:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551226789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:43:04,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:43:04,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-19 06:43:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404457440] [2024-11-19 06:43:04,027 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 06:43:04,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 06:43:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:43:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 06:43:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2024-11-19 06:43:04,028 INFO L87 Difference]: Start difference. First operand 244 states and 259 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:43:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:43:04,718 INFO L93 Difference]: Finished difference Result 240 states and 255 transitions. [2024-11-19 06:43:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:43:04,718 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 127 [2024-11-19 06:43:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:43:04,720 INFO L225 Difference]: With dead ends: 240 [2024-11-19 06:43:04,720 INFO L226 Difference]: Without dead ends: 240 [2024-11-19 06:43:04,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2024-11-19 06:43:04,720 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 18 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:43:04,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1041 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1038 Invalid, 0 Unknown, 204 Unchecked, 0.5s Time] [2024-11-19 06:43:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-19 06:43:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-19 06:43:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 154 states have (on average 1.577922077922078) internal successors, (243), 230 states have internal predecessors, (243), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:43:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 255 transitions. [2024-11-19 06:43:04,724 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 255 transitions. Word has length 127 [2024-11-19 06:43:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:43:04,725 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 255 transitions. [2024-11-19 06:43:04,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:43:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 255 transitions. [2024-11-19 06:43:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 06:43:04,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:43:04,726 INFO L215 NwaCegarLoop]: trace histogram [54, 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] [2024-11-19 06:43:04,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:43:04,930 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 [2024-11-19 06:43:04,931 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:43:04,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:43:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash 109284256, now seen corresponding path program 1 times [2024-11-19 06:43:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:43:04,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696082308] [2024-11-19 06:43:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:43:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:43:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:43:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 1484 trivial. 0 not checked. [2024-11-19 06:43:05,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:43:05,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696082308] [2024-11-19 06:43:05,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696082308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:43:05,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:43:05,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:43:05,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907207021] [2024-11-19 06:43:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:43:05,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:43:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:43:05,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:43:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:43:05,830 INFO L87 Difference]: Start difference. First operand 240 states and 255 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 06:43:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:43:06,105 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2024-11-19 06:43:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:43:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 130 [2024-11-19 06:43:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:43:06,107 INFO L225 Difference]: With dead ends: 239 [2024-11-19 06:43:06,107 INFO L226 Difference]: Without dead ends: 239 [2024-11-19 06:43:06,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:43:06,107 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 9 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:43:06,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1040 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:43:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-19 06:43:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-11-19 06:43:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 154 states have (on average 1.5714285714285714) internal successors, (242), 229 states have internal predecessors, (242), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:43:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2024-11-19 06:43:06,112 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 130 [2024-11-19 06:43:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:43:06,112 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2024-11-19 06:43:06,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-19 06:43:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2024-11-19 06:43:06,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 06:43:06,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:43:06,113 INFO L215 NwaCegarLoop]: trace histogram [54, 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] [2024-11-19 06:43:06,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:43:06,113 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:43:06,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:43:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash 109284257, now seen corresponding path program 1 times [2024-11-19 06:43:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:43:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995189828] [2024-11-19 06:43:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:43:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:43:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:43:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 817 proven. 139 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2024-11-19 06:43:08,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:43:08,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995189828] [2024-11-19 06:43:08,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995189828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:43:08,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210923885] [2024-11-19 06:43:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:43:08,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:43:08,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:43:08,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:43:08,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:43:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:43:10,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-19 06:43:10,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:43:11,216 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 [2024-11-19 06:43:18,485 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 [2024-11-19 06:43:18,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:43:18,545 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 [2024-11-19 06:43:18,581 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:43:18,581 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 [2024-11-19 06:43:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 777 proven. 575 refuted. 0 times theorem prover too weak. 314 trivial. 224 not checked. [2024-11-19 06:43:18,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:43:18,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210923885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:43:18,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:43:18,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 34] total 55 [2024-11-19 06:43:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867582549] [2024-11-19 06:43:18,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:43:18,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-19 06:43:18,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:43:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-19 06:43:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2880, Unknown=2, NotChecked=108, Total=3192 [2024-11-19 06:43:18,826 INFO L87 Difference]: Start difference. First operand 239 states and 254 transitions. Second operand has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 50 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 06:43:22,875 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] [2024-11-19 06:43:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:43:27,756 INFO L93 Difference]: Finished difference Result 266 states and 294 transitions. [2024-11-19 06:43:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 06:43:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 50 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 130 [2024-11-19 06:43:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:43:27,759 INFO L225 Difference]: With dead ends: 266 [2024-11-19 06:43:27,759 INFO L226 Difference]: Without dead ends: 263 [2024-11-19 06:43:27,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=380, Invalid=4878, Unknown=2, NotChecked=142, Total=5402 [2024-11-19 06:43:27,761 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 16 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4736 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:43:27,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4736 Invalid, 3738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3514 Invalid, 1 Unknown, 213 Unchecked, 7.5s Time] [2024-11-19 06:43:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-19 06:43:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 245. [2024-11-19 06:43:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 159 states have (on average 1.559748427672956) internal successors, (248), 235 states have internal predecessors, (248), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-19 06:43:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2024-11-19 06:43:27,767 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 130 [2024-11-19 06:43:27,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:43:27,767 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2024-11-19 06:43:27,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 50 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 06:43:27,768 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2024-11-19 06:43:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 06:43:27,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:43:27,769 INFO L215 NwaCegarLoop]: trace histogram [55, 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] [2024-11-19 06:43:27,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:43:27,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 06:43:27,972 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2024-11-19 06:43:27,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:43:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1986470747, now seen corresponding path program 2 times [2024-11-19 06:43:27,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:43:27,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39686430] [2024-11-19 06:43:27,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:43:27,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:43:28,140 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:43:28,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:43:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1950 backedges. 413 proven. 21 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2024-11-19 06:43:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:43:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39686430] [2024-11-19 06:43:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39686430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:43:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027941619] [2024-11-19 06:43:29,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:43:29,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:43:29,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:43:29,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:43:29,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:43:31,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:43:31,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:43:31,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-19 06:43:31,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:43:31,880 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 [2024-11-19 06:44:14,213 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:44:14,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-19 06:44:14,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:14,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9