./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0234-2.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-0234-2.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 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:41:58,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:41:58,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:41:58,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:41:58,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:41:58,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:41:58,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:41:58,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:41:58,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:41:58,410 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:41:58,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:41:58,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:41:58,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:41:58,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:41:58,414 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:41:58,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:41:58,414 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:41:58,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:41:58,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:41:58,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:41:58,415 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:41:58,415 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:41:58,415 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:41:58,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:41:58,416 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:41:58,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:41:58,416 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:41:58,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:41:58,416 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:41:58,416 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:41:58,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:41:58,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:41:58,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:41:58,418 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:41:58,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:41:58,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:41:58,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2024-11-19 06:41:58,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:41:58,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:41:58,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:41:58,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:41:58,664 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:41:58,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-2.i [2024-11-19 06:41:59,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:42:00,044 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:42:00,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i [2024-11-19 06:42:00,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc7cf52b/8c2bc8cd945944418372668014806500/FLAG57312e4f5 [2024-11-19 06:42:00,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc7cf52b/8c2bc8cd945944418372668014806500 [2024-11-19 06:42:00,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:42:00,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:42:00,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:42:00,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:42:00,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:42:00,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac3dc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00, skipping insertion in model container [2024-11-19 06:42:00,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:42:00,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:42:00,437 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:42:00,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:42:00,512 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:42:00,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00 WrapperNode [2024-11-19 06:42:00,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:42:00,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:42:00,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:42:00,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:42:00,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,567 INFO L138 Inliner]: procedures = 188, calls = 58, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 207 [2024-11-19 06:42:00,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:42:00,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:42:00,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:42:00,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:42:00,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,603 INFO L175 MemorySlicer]: Split 31 memory accesses to 3 slices as follows [2, 4, 25]. 81 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-11-19 06:42:00,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:42:00,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:42:00,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:42:00,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:42:00,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (1/1) ... [2024-11-19 06:42:00,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:42:00,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:00,646 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 06:42:00,647 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 06:42:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-19 06:42:00,693 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:42:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 06:42:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 06:42:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 06:42:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:42:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:42:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 06:42:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:42:00,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:42:00,818 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:42:00,819 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:42:01,167 INFO L? ?]: Removed 190 outVars from TransFormulas that were not future-live. [2024-11-19 06:42:01,168 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:42:01,185 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:42:01,186 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-19 06:42:01,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:01 BoogieIcfgContainer [2024-11-19 06:42:01,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:42:01,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:42:01,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:42:01,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:42:01,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:00" (1/3) ... [2024-11-19 06:42:01,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f43373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:01, skipping insertion in model container [2024-11-19 06:42:01,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:00" (2/3) ... [2024-11-19 06:42:01,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f43373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:01, skipping insertion in model container [2024-11-19 06:42:01,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:01" (3/3) ... [2024-11-19 06:42:01,197 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2024-11-19 06:42:01,212 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:42:01,212 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2024-11-19 06:42:01,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:42:01,262 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;@26c004dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:42:01,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2024-11-19 06:42:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 104 states have (on average 1.8846153846153846) internal successors, (196), 174 states have internal predecessors, (196), 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 06:42:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 06:42:01,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:01,272 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 06:42:01,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-19 06:42:01,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:01,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1545798, now seen corresponding path program 1 times [2024-11-19 06:42:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:01,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749591294] [2024-11-19 06:42:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:01,389 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 06:42:01,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:01,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749591294] [2024-11-19 06:42:01,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749591294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:01,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:01,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:42:01,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932415756] [2024-11-19 06:42:01,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:01,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 06:42:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 06:42:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:42:01,417 INFO L87 Difference]: Start difference. First operand has 182 states, 104 states have (on average 1.8846153846153846) internal successors, (196), 174 states have internal predecessors, (196), 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 06:42:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:01,436 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2024-11-19 06:42:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 06:42:01,438 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 06:42:01,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:01,443 INFO L225 Difference]: With dead ends: 182 [2024-11-19 06:42:01,443 INFO L226 Difference]: Without dead ends: 180 [2024-11-19 06:42:01,445 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 06:42:01,447 INFO L432 NwaCegarLoop]: 197 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, 197 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 06:42:01,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:42:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-19 06:42:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-19 06:42:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 172 states have internal predecessors, (183), 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 06:42:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 195 transitions. [2024-11-19 06:42:01,478 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 195 transitions. Word has length 4 [2024-11-19 06:42:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:01,479 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 195 transitions. [2024-11-19 06:42:01,480 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 06:42:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 195 transitions. [2024-11-19 06:42:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:42:01,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:01,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:42:01,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:42:01,481 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 67 more)] === [2024-11-19 06:42:01,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1481473757, now seen corresponding path program 1 times [2024-11-19 06:42:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:01,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627954765] [2024-11-19 06:42:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:01,615 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 06:42:01,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:01,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627954765] [2024-11-19 06:42:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627954765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:01,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:01,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:42:01,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843264324] [2024-11-19 06:42:01,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:01,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:42:01,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:01,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:42:01,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:42:01,617 INFO L87 Difference]: Start difference. First operand 180 states and 195 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 06:42:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:01,738 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2024-11-19 06:42:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:42:01,739 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 06:42:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:01,741 INFO L225 Difference]: With dead ends: 179 [2024-11-19 06:42:01,741 INFO L226 Difference]: Without dead ends: 179 [2024-11-19 06:42:01,741 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 06:42:01,742 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 4 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:01,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 311 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-19 06:42:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-19 06:42:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 103 states have (on average 1.766990291262136) internal successors, (182), 171 states have internal predecessors, (182), 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 06:42:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2024-11-19 06:42:01,753 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 6 [2024-11-19 06:42:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:01,754 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2024-11-19 06:42:01,755 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 06:42:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2024-11-19 06:42:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:42:01,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:01,755 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:01,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:42:01,755 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 67 more)] === [2024-11-19 06:42:01,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1318953755, now seen corresponding path program 1 times [2024-11-19 06:42:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691721164] [2024-11-19 06:42:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:01,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47110631] [2024-11-19 06:42:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:01,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:01,795 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 06:42:01,796 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 06:42:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:01,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:42:01,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:02,010 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 06:42:02,030 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 06:42:02,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:02,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:02,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691721164] [2024-11-19 06:42:02,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:02,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47110631] [2024-11-19 06:42:02,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47110631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:02,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:02,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:42:02,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207105282] [2024-11-19 06:42:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:02,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:42:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:42:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:42:02,033 INFO L87 Difference]: Start difference. First operand 179 states and 194 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 06:42:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:02,162 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2024-11-19 06:42:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:42:02,162 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 06:42:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:02,164 INFO L225 Difference]: With dead ends: 188 [2024-11-19 06:42:02,164 INFO L226 Difference]: Without dead ends: 188 [2024-11-19 06:42:02,165 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 06:42:02,167 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 11 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:02,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 495 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-19 06:42:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-19 06:42:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 111 states have (on average 1.7207207207207207) internal successors, (191), 179 states have internal predecessors, (191), 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 06:42:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2024-11-19 06:42:02,181 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 7 [2024-11-19 06:42:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:02,181 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2024-11-19 06:42:02,181 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 06:42:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2024-11-19 06:42:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 06:42:02,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:02,183 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 06:42:02,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 06:42:02,384 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 06:42:02,385 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 67 more)] === [2024-11-19 06:42:02,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1465566728, now seen corresponding path program 1 times [2024-11-19 06:42:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154244721] [2024-11-19 06:42:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892756302] [2024-11-19 06:42:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:02,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:02,489 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 06:42:02,490 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 06:42:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:02,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 06:42:02,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:02,650 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 06:42:02,682 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 06:42:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 06:42:02,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:02,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154244721] [2024-11-19 06:42:02,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:02,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892756302] [2024-11-19 06:42:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892756302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:42:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043001174] [2024-11-19 06:42:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:02,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:42:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:42:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:42:02,728 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:42:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:02,850 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2024-11-19 06:42:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:42:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-19 06:42:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:02,852 INFO L225 Difference]: With dead ends: 200 [2024-11-19 06:42:02,852 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 06:42:02,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:42:02,853 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 3 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:02,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 680 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 06:42:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-19 06:42:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 181 states have internal predecessors, (193), 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 06:42:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 205 transitions. [2024-11-19 06:42:02,860 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 205 transitions. Word has length 66 [2024-11-19 06:42:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:02,860 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 205 transitions. [2024-11-19 06:42:02,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:42:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 205 transitions. [2024-11-19 06:42:02,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 06:42:02,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:02,862 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 06:42:02,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 06:42:03,062 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 06:42:03,063 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 67 more)] === [2024-11-19 06:42:03,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1297949528, now seen corresponding path program 1 times [2024-11-19 06:42:03,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:03,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397327977] [2024-11-19 06:42:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:03,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 06:42:03,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096063670] [2024-11-19 06:42:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:03,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:03,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:03,277 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 06:42:03,279 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 06:42:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:03,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 06:42:03,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:03,507 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 06:42:03,537 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 06:42:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-19 06:42:03,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-19 06:42:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397327977] [2024-11-19 06:42:03,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096063670] [2024-11-19 06:42:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096063670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:03,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:42:03,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-19 06:42:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133654427] [2024-11-19 06:42:03,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:03,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:42:03,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:03,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:42:03,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:42:03,797 INFO L87 Difference]: Start difference. First operand 190 states and 205 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 06:42:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:04,093 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2024-11-19 06:42:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:42:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-19 06:42:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:04,094 INFO L225 Difference]: With dead ends: 209 [2024-11-19 06:42:04,094 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 06:42:04,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:42:04,095 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 18 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:04,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 996 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:42:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 06:42:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-19 06:42:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 117 states have (on average 1.6837606837606838) internal successors, (197), 185 states have internal predecessors, (197), 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 06:42:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2024-11-19 06:42:04,104 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 71 [2024-11-19 06:42:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:04,107 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2024-11-19 06:42:04,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 06:42:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2024-11-19 06:42:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 06:42:04,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:04,110 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:04,124 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 06:42:04,311 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 06:42:04,311 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 67 more)] === [2024-11-19 06:42:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1603661320, now seen corresponding path program 2 times [2024-11-19 06:42:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100164453] [2024-11-19 06:42:04,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:42:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:04,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:42:04,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-19 06:42:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279265730] [2024-11-19 06:42:04,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:42:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:04,495 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 06:42:04,496 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 06:42:04,963 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:42:04,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:42:04,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-19 06:42:04,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:05,010 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 06:42:05,037 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 06:42:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 255 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 06:42:05,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 79 proven. 74 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-19 06:42:05,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:05,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100164453] [2024-11-19 06:42:05,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:05,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279265730] [2024-11-19 06:42:05,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279265730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:05,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:42:05,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-19 06:42:05,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722575804] [2024-11-19 06:42:05,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:05,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:42:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:42:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:42:05,413 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 06:42:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:05,902 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2024-11-19 06:42:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:42:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2024-11-19 06:42:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:05,904 INFO L225 Difference]: With dead ends: 216 [2024-11-19 06:42:05,904 INFO L226 Difference]: Without dead ends: 201 [2024-11-19 06:42:05,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 06:42:05,905 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 32 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:05,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1976 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:42:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-19 06:42:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-19 06:42:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 124 states have (on average 1.6451612903225807) internal successors, (204), 192 states have internal predecessors, (204), 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 06:42:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 216 transitions. [2024-11-19 06:42:05,913 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 216 transitions. Word has length 86 [2024-11-19 06:42:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:05,913 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 216 transitions. [2024-11-19 06:42:05,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 06:42:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 216 transitions. [2024-11-19 06:42:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 06:42:05,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:05,915 INFO L215 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:05,925 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 06:42:06,118 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 06:42:06,119 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 67 more)] === [2024-11-19 06:42:06,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:06,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1497372168, now seen corresponding path program 3 times [2024-11-19 06:42:06,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:06,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708863121] [2024-11-19 06:42:06,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:42:06,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:06,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-19 06:42:06,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-19 06:42:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589804055] [2024-11-19 06:42:06,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:42:06,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:06,528 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 06:42:06,530 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 06:42:06,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 06:42:06,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:42:06,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:42:06,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:06,739 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 06:42:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2024-11-19 06:42:06,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:42:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708863121] [2024-11-19 06:42:06,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 06:42:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589804055] [2024-11-19 06:42:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589804055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:42:06,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:42:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:42:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575244945] [2024-11-19 06:42:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:42:06,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:42:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:42:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:42:06,753 INFO L87 Difference]: Start difference. First operand 201 states and 216 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 06:42:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:06,827 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2024-11-19 06:42:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:42:06,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2024-11-19 06:42:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:06,828 INFO L225 Difference]: With dead ends: 200 [2024-11-19 06:42:06,828 INFO L226 Difference]: Without dead ends: 200 [2024-11-19 06:42:06,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:42:06,829 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:06,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 517 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:42:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-19 06:42:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-11-19 06:42:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 124 states have (on average 1.6370967741935485) internal successors, (203), 191 states have internal predecessors, (203), 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 06:42:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2024-11-19 06:42:06,838 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 106 [2024-11-19 06:42:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:06,838 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2024-11-19 06:42:06,838 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 06:42:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2024-11-19 06:42:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-19 06:42:06,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:06,840 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:06,848 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 06:42:07,040 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 06:42:07,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-19 06:42:07,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1394908440, now seen corresponding path program 1 times [2024-11-19 06:42:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603433701] [2024-11-19 06:42:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-19 06:42:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603433701] [2024-11-19 06:42:07,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603433701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532006417] [2024-11-19 06:42:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:07,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:07,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:07,995 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 06:42:07,996 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 06:42:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:08,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 06:42:08,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:08,329 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 06:42:08,359 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:42:08,359 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 06:42:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 60 not checked. [2024-11-19 06:42:08,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:08,560 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 06:42:08,561 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 06:42:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-19 06:42:08,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532006417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:08,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:42:08,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 16 [2024-11-19 06:42:08,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808382353] [2024-11-19 06:42:08,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:08,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:42:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:08,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:42:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2024-11-19 06:42:08,579 INFO L87 Difference]: Start difference. First operand 200 states and 215 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 06:42:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:09,039 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2024-11-19 06:42:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:42:09,040 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2024-11-19 06:42:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:09,041 INFO L225 Difference]: With dead ends: 198 [2024-11-19 06:42:09,041 INFO L226 Difference]: Without dead ends: 198 [2024-11-19 06:42:09,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 228 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2024-11-19 06:42:09,041 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 13 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:09,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1527 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 878 Invalid, 0 Unknown, 183 Unchecked, 0.4s Time] [2024-11-19 06:42:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-19 06:42:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-19 06:42:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 124 states have (on average 1.6209677419354838) internal successors, (201), 189 states have internal predecessors, (201), 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 06:42:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 213 transitions. [2024-11-19 06:42:09,047 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 213 transitions. Word has length 118 [2024-11-19 06:42:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:09,048 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 213 transitions. [2024-11-19 06:42:09,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 06:42:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 213 transitions. [2024-11-19 06:42:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-19 06:42:09,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:09,049 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:09,064 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 06:42:09,253 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 06:42:09,255 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-19 06:42:09,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1394908439, now seen corresponding path program 1 times [2024-11-19 06:42:09,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:09,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19581031] [2024-11-19 06:42:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 97 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2024-11-19 06:42:11,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19581031] [2024-11-19 06:42:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19581031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:11,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392254818] [2024-11-19 06:42:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:11,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:11,199 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 06:42:11,200 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 06:42:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:12,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-19 06:42:12,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:12,655 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 06:42:14,135 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 06:42:14,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:42:14,184 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 06:42:14,189 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:42:14,190 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 06:42:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 398 proven. 562 refuted. 0 times theorem prover too weak. 284 trivial. 151 not checked. [2024-11-19 06:42:14,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392254818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:14,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:42:14,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29] total 47 [2024-11-19 06:42:14,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510234621] [2024-11-19 06:42:14,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:14,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 06:42:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 06:42:14,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2195, Unknown=1, NotChecked=94, Total=2450 [2024-11-19 06:42:14,360 INFO L87 Difference]: Start difference. First operand 198 states and 213 transitions. Second operand has 48 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 43 states have internal predecessors, (84), 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 06:42:18,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 06:42:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:21,209 INFO L93 Difference]: Finished difference Result 228 states and 255 transitions. [2024-11-19 06:42:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 06:42:21,210 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 43 states have internal predecessors, (84), 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 118 [2024-11-19 06:42:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:21,212 INFO L225 Difference]: With dead ends: 228 [2024-11-19 06:42:21,212 INFO L226 Difference]: Without dead ends: 228 [2024-11-19 06:42:21,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=344, Invalid=4351, Unknown=1, NotChecked=134, Total=4830 [2024-11-19 06:42:21,214 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 67 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:21,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2921 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1991 Invalid, 1 Unknown, 202 Unchecked, 5.5s Time] [2024-11-19 06:42:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-19 06:42:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 196. [2024-11-19 06:42:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 124 states have (on average 1.6048387096774193) internal successors, (199), 187 states have internal predecessors, (199), 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 06:42:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 211 transitions. [2024-11-19 06:42:21,219 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 211 transitions. Word has length 118 [2024-11-19 06:42:21,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:21,220 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 211 transitions. [2024-11-19 06:42:21,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 43 states have internal predecessors, (84), 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 06:42:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 211 transitions. [2024-11-19 06:42:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 06:42:21,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:21,222 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:21,257 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 06:42:21,422 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 06:42:21,422 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-19 06:42:21,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:21,423 INFO L85 PathProgramCache]: Analyzing trace with hash -477213623, now seen corresponding path program 1 times [2024-11-19 06:42:21,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:21,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611634112] [2024-11-19 06:42:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 833 proven. 96 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2024-11-19 06:42:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611634112] [2024-11-19 06:42:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611634112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547126280] [2024-11-19 06:42:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:22,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:22,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:22,468 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 06:42:22,469 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 06:42:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:22,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 06:42:22,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:22,855 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 06:42:22,882 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:42:22,882 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 06:42:22,924 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:42:22,924 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 06:42:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 147 not checked. [2024-11-19 06:42:22,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:23,235 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 06:42:23,235 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 06:42:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 149 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-11-19 06:42:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547126280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:42:23,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:42:23,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 22 [2024-11-19 06:42:23,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630781717] [2024-11-19 06:42:23,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:23,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 06:42:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 06:42:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2024-11-19 06:42:23,249 INFO L87 Difference]: Start difference. First operand 196 states and 211 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 06:42:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:42:23,933 INFO L93 Difference]: Finished difference Result 193 states and 208 transitions. [2024-11-19 06:42:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:42:23,934 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2024-11-19 06:42:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:42:23,935 INFO L225 Difference]: With dead ends: 193 [2024-11-19 06:42:23,935 INFO L226 Difference]: Without dead ends: 193 [2024-11-19 06:42:23,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=606, Unknown=1, NotChecked=50, Total=756 [2024-11-19 06:42:23,935 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 35 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:42:23,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2058 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1330 Invalid, 0 Unknown, 178 Unchecked, 0.6s Time] [2024-11-19 06:42:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-19 06:42:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-19 06:42:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 124 states have (on average 1.5806451612903225) internal successors, (196), 184 states have internal predecessors, (196), 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 06:42:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2024-11-19 06:42:23,939 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 120 [2024-11-19 06:42:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:42:23,939 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2024-11-19 06:42:23,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 06:42:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2024-11-19 06:42:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 06:42:23,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:42:23,940 INFO L215 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:42:23,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 06:42:24,143 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 06:42:24,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2024-11-19 06:42:24,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:42:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash -477213622, now seen corresponding path program 1 times [2024-11-19 06:42:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:42:24,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154360603] [2024-11-19 06:42:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:42:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 246 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-11-19 06:42:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:42:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154360603] [2024-11-19 06:42:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154360603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715462986] [2024-11-19 06:42:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:42:26,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:42:26,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:42:26,214 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 06:42:26,214 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 06:42:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:42:27,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-19 06:42:27,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:42:27,214 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 06:42:50,421 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-19 06:42:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:42:50,504 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 06:42:50,521 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 06:42:50,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 06:42:50,567 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 06:42:50,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:42:50,613 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 06:42:50,618 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:42:50,618 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 06:42:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 411 proven. 400 refuted. 0 times theorem prover too weak. 164 trivial. 420 not checked. [2024-11-19 06:42:56,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:42:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715462986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:42:56,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:42:56,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 50 [2024-11-19 06:42:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304917633] [2024-11-19 06:42:56,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:42:56,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 06:42:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:42:56,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 06:42:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2397, Unknown=12, NotChecked=198, Total=2756 [2024-11-19 06:42:56,559 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand has 51 states, 50 states have (on average 2.12) internal successors, (106), 48 states have internal predecessors, (106), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 06:43:01,005 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 06:43:05,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 06:43:09,477 WARN L539 Checker$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 06:43:13,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 06:43:17,885 WARN L539 Checker$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 06:43:22,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 06:43:26,287 WARN L539 Checker$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 06:43:30,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]