./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:57:48,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:57:48,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:57:48,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:57:48,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:57:48,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:57:48,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:57:48,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:57:48,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:57:48,246 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:57:48,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:57:48,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:57:48,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:57:48,248 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:57:48,248 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:57:48,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:57:48,248 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:57:48,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:57:48,249 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:57:48,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:57:48,249 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:57:48,251 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:57:48,252 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:57:48,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:57:48,253 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:57:48,253 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:57:48,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:57:48,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:57:48,254 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:57:48,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:57:48,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:57:48,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:57:48,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:57:48,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:48,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:57:48,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:57:48,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:57:48,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:57:48,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:57:48,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:57:48,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:57:48,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:57:48,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2024-10-11 17:57:48,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:57:48,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:57:48,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:57:48,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:57:48,489 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:57:48,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i [2024-10-11 17:57:49,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:57:50,107 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:57:50,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i [2024-10-11 17:57:50,132 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5f87c066f/1d9bc777018e425ca4aa2110bcdc8041/FLAG2bfc47220 [2024-10-11 17:57:50,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5f87c066f/1d9bc777018e425ca4aa2110bcdc8041 [2024-10-11 17:57:50,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:57:50,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:57:50,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:50,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:57:50,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:57:50,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:50,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1329c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50, skipping insertion in model container [2024-10-11 17:57:50,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:50,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:57:50,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:50,837 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:57:50,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:50,929 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:57:50,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50 WrapperNode [2024-10-11 17:57:50,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:50,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:50,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:57:50,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:57:50,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:50,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:50,978 INFO L138 Inliner]: procedures = 188, calls = 58, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 207 [2024-10-11 17:57:50,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:50,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:57:50,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:57:50,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:57:50,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:50,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:50,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,077 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]. [2024-10-11 17:57:51,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:57:51,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:57:51,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:57:51,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:57:51,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (1/1) ... [2024-10-11 17:57:51,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:51,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:51,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:57:51,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:57:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 17:57:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:57:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 17:57:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-10-11 17:57:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:57:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 17:57:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 17:57:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 17:57:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 17:57:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 17:57:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 17:57:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:57:51,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:57:51,326 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:57:51,327 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:57:51,633 INFO L? ?]: Removed 190 outVars from TransFormulas that were not future-live. [2024-10-11 17:57:51,633 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:57:51,688 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:57:51,689 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 17:57:51,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:51 BoogieIcfgContainer [2024-10-11 17:57:51,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:57:51,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:57:51,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:57:51,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:57:51,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:57:50" (1/3) ... [2024-10-11 17:57:51,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbebee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:51, skipping insertion in model container [2024-10-11 17:57:51,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:50" (2/3) ... [2024-10-11 17:57:51,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbebee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:51, skipping insertion in model container [2024-10-11 17:57:51,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:51" (3/3) ... [2024-10-11 17:57:51,697 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2024-10-11 17:57:51,711 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:57:51,712 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2024-10-11 17:57:51,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:57:51,748 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;@38abd33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:57:51,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2024-10-11 17:57:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 74 states have (on average 2.2432432432432434) internal successors, (166), 144 states have internal predecessors, (166), 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) [2024-10-11 17:57:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 17:57:51,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:51,756 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 17:57:51,757 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)] === [2024-10-11 17:57:51,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 363768, now seen corresponding path program 1 times [2024-10-11 17:57:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:51,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894136242] [2024-10-11 17:57:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:51,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:51,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:51,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894136242] [2024-10-11 17:57:51,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894136242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:51,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:51,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118059582] [2024-10-11 17:57:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:51,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 17:57:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 17:57:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:57:51,891 INFO L87 Difference]: Start difference. First operand has 152 states, 74 states have (on average 2.2432432432432434) internal successors, (166), 144 states have internal predecessors, (166), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:51,943 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2024-10-11 17:57:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 17:57:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-11 17:57:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:51,977 INFO L225 Difference]: With dead ends: 152 [2024-10-11 17:57:51,978 INFO L226 Difference]: Without dead ends: 151 [2024-10-11 17:57:51,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:57:51,988 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:52,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:57:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-11 17:57:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-11 17:57:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 74 states have (on average 2.081081081081081) internal successors, (154), 143 states have internal predecessors, (154), 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) [2024-10-11 17:57:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2024-10-11 17:57:52,085 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 3 [2024-10-11 17:57:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:52,085 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2024-10-11 17:57:52,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2024-10-11 17:57:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 17:57:52,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:52,087 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 17:57:52,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:57:52,087 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)] === [2024-10-11 17:57:52,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 345542927, now seen corresponding path program 1 times [2024-10-11 17:57:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:52,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863766612] [2024-10-11 17:57:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:52,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863766612] [2024-10-11 17:57:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863766612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:52,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642437199] [2024-10-11 17:57:52,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:52,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:57:52,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:57:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:57:52,231 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:52,377 INFO L93 Difference]: Finished difference Result 150 states and 165 transitions. [2024-10-11 17:57:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:57:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 17:57:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:52,379 INFO L225 Difference]: With dead ends: 150 [2024-10-11 17:57:52,379 INFO L226 Difference]: Without dead ends: 150 [2024-10-11 17:57:52,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:57:52,380 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:52,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 233 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-11 17:57:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-10-11 17:57:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 142 states have internal predecessors, (153), 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) [2024-10-11 17:57:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2024-10-11 17:57:52,388 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 5 [2024-10-11 17:57:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:52,388 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2024-10-11 17:57:52,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2024-10-11 17:57:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:57:52,389 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:52,389 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:57:52,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:57:52,390 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)] === [2024-10-11 17:57:52,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2121896179, now seen corresponding path program 1 times [2024-10-11 17:57:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611631528] [2024-10-11 17:57:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585867439] [2024-10-11 17:57:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:52,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:52,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:52,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:57:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:52,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:57:52,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:52,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:52,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:52,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611631528] [2024-10-11 17:57:52,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585867439] [2024-10-11 17:57:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585867439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:57:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899289790] [2024-10-11 17:57:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:52,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:57:52,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:57:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:57:52,655 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:52,780 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2024-10-11 17:57:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:57:52,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-11 17:57:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:52,782 INFO L225 Difference]: With dead ends: 157 [2024-10-11 17:57:52,782 INFO L226 Difference]: Without dead ends: 157 [2024-10-11 17:57:52,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:57:52,783 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 9 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:52,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 364 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-11 17:57:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-10-11 17:57:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 80 states have (on average 2.0) internal successors, (160), 148 states have internal predecessors, (160), 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) [2024-10-11 17:57:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2024-10-11 17:57:52,792 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 6 [2024-10-11 17:57:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:52,792 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 172 transitions. [2024-10-11 17:57:52,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 172 transitions. [2024-10-11 17:57:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 17:57:52,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:52,794 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 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] [2024-10-11 17:57:52,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:57:52,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:53,000 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)] === [2024-10-11 17:57:53,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash 770565054, now seen corresponding path program 1 times [2024-10-11 17:57:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:53,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894826243] [2024-10-11 17:57:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625057893] [2024-10-11 17:57:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:53,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:53,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:53,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:57:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:53,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-11 17:57:53,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:53,272 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 [2024-10-11 17:57:53,302 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 [2024-10-11 17:57:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-11 17:57:53,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:53,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:53,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894826243] [2024-10-11 17:57:53,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:53,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625057893] [2024-10-11 17:57:53,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625057893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:53,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:53,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:57:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654431984] [2024-10-11 17:57:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:53,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 17:57:53,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 17:57:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:57:53,370 INFO L87 Difference]: Start difference. First operand 157 states and 172 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-10-11 17:57:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:53,511 INFO L93 Difference]: Finished difference Result 165 states and 180 transitions. [2024-10-11 17:57:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 17:57:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 55 [2024-10-11 17:57:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:53,512 INFO L225 Difference]: With dead ends: 165 [2024-10-11 17:57:53,513 INFO L226 Difference]: Without dead ends: 159 [2024-10-11 17:57:53,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:57:53,514 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 3 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:53,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 500 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-10-11 17:57:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-10-11 17:57:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 82 states have (on average 1.975609756097561) internal successors, (162), 150 states have internal predecessors, (162), 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) [2024-10-11 17:57:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2024-10-11 17:57:53,522 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 55 [2024-10-11 17:57:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:53,522 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2024-10-11 17:57:53,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-10-11 17:57:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2024-10-11 17:57:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-11 17:57:53,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:53,524 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 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] [2024-10-11 17:57:53,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 17:57:53,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:53,729 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)] === [2024-10-11 17:57:53,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1610985622, now seen corresponding path program 1 times [2024-10-11 17:57:53,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:53,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524006636] [2024-10-11 17:57:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416969180] [2024-10-11 17:57:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:53,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:53,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:53,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:57:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:54,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-11 17:57:54,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:54,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 17:57:54,128 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 [2024-10-11 17:57:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 54 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-11 17:57:54,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-11 17:57:54,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524006636] [2024-10-11 17:57:54,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416969180] [2024-10-11 17:57:54,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416969180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:54,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:54,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-10-11 17:57:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459676551] [2024-10-11 17:57:54,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:54,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 17:57:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 17:57:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-11 17:57:54,367 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-11 17:57:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:54,674 INFO L93 Difference]: Finished difference Result 172 states and 188 transitions. [2024-10-11 17:57:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 17:57:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2024-10-11 17:57:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:54,679 INFO L225 Difference]: With dead ends: 172 [2024-10-11 17:57:54,679 INFO L226 Difference]: Without dead ends: 163 [2024-10-11 17:57:54,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:57:54,680 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 16 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:54,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 736 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-11 17:57:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-11 17:57:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 86 states have (on average 1.930232558139535) internal successors, (166), 154 states have internal predecessors, (166), 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) [2024-10-11 17:57:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 178 transitions. [2024-10-11 17:57:54,689 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 178 transitions. Word has length 60 [2024-10-11 17:57:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:54,689 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 178 transitions. [2024-10-11 17:57:54,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-11 17:57:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 178 transitions. [2024-10-11 17:57:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 17:57:54,691 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:54,691 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 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] [2024-10-11 17:57:54,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:57:54,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:54,895 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)] === [2024-10-11 17:57:54,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 495024830, now seen corresponding path program 2 times [2024-10-11 17:57:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:54,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540986895] [2024-10-11 17:57:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:55,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646421993] [2024-10-11 17:57:55,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:57:55,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:55,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:55,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:57:55,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:57:55,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:57:55,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 17:57:55,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:55,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 17:57:55,392 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 [2024-10-11 17:57:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 127 proven. 10 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-10-11 17:57:55,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 15 proven. 130 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-10-11 17:57:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540986895] [2024-10-11 17:57:55,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646421993] [2024-10-11 17:57:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646421993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:55,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:55,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-11 17:57:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564400337] [2024-10-11 17:57:55,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:55,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 17:57:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 17:57:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-11 17:57:55,727 INFO L87 Difference]: Start difference. First operand 163 states and 178 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-11 17:57:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:56,290 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2024-10-11 17:57:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 17:57:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2024-10-11 17:57:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:56,292 INFO L225 Difference]: With dead ends: 179 [2024-10-11 17:57:56,292 INFO L226 Difference]: Without dead ends: 170 [2024-10-11 17:57:56,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=620, Unknown=0, NotChecked=0, Total=870 [2024-10-11 17:57:56,293 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 20 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:56,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1383 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 17:57:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-11 17:57:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-10-11 17:57:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 93 states have (on average 1.8602150537634408) internal successors, (173), 161 states have internal predecessors, (173), 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) [2024-10-11 17:57:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 185 transitions. [2024-10-11 17:57:56,306 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 185 transitions. Word has length 75 [2024-10-11 17:57:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:56,307 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 185 transitions. [2024-10-11 17:57:56,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-11 17:57:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 185 transitions. [2024-10-11 17:57:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-11 17:57:56,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:56,308 INFO L215 NwaCegarLoop]: trace histogram [40, 6, 6, 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] [2024-10-11 17:57:56,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:57:56,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 17:57:56,509 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)] === [2024-10-11 17:57:56,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash 181572030, now seen corresponding path program 3 times [2024-10-11 17:57:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240149118] [2024-10-11 17:57:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057922757] [2024-10-11 17:57:56,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:57:56,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:56,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:56,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:56,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:57:57,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 17:57:57,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:57:57,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:57:57,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:57,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-10-11 17:57:57,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:57,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240149118] [2024-10-11 17:57:57,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:57,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057922757] [2024-10-11 17:57:57,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057922757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:57,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:57,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:57:57,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884479834] [2024-10-11 17:57:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:57,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:57:57,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:57,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:57:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:57:57,111 INFO L87 Difference]: Start difference. First operand 170 states and 185 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-10-11 17:57:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:57,198 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2024-10-11 17:57:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:57:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 95 [2024-10-11 17:57:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:57,200 INFO L225 Difference]: With dead ends: 169 [2024-10-11 17:57:57,200 INFO L226 Difference]: Without dead ends: 169 [2024-10-11 17:57:57,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:57:57,201 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 9 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:57,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 382 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-10-11 17:57:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-10-11 17:57:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 160 states have internal predecessors, (172), 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) [2024-10-11 17:57:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 184 transitions. [2024-10-11 17:57:57,206 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 184 transitions. Word has length 95 [2024-10-11 17:57:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:57,206 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 184 transitions. [2024-10-11 17:57:57,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-10-11 17:57:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 184 transitions. [2024-10-11 17:57:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 17:57:57,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:57,207 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-11 17:57:57,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:57:57,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:57,413 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)] === [2024-10-11 17:57:57,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 371802002, now seen corresponding path program 1 times [2024-10-11 17:57:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:57,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577658472] [2024-10-11 17:57:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 17:57:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:57:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:57:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 17:57:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 17:57:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 580 proven. 59 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-10-11 17:57:58,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:58,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577658472] [2024-10-11 17:57:58,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577658472] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:58,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071290014] [2024-10-11 17:57:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:58,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:58,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:58,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:58,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:57:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 17:57:58,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:58,661 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 [2024-10-11 17:57:58,687 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:57:58,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:57:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 585 proven. 1 refuted. 0 times theorem prover too weak. 721 trivial. 58 not checked. [2024-10-11 17:57:58,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:58,860 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 17:57:58,860 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 [2024-10-11 17:57:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 585 proven. 59 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-10-11 17:57:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071290014] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:58,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:57:58,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-11 17:57:58,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996683394] [2024-10-11 17:57:58,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:58,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:57:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:57:58,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2024-10-11 17:57:58,880 INFO L87 Difference]: Start difference. First operand 169 states and 184 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:57:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:59,362 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2024-10-11 17:57:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:57:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-10-11 17:57:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:59,364 INFO L225 Difference]: With dead ends: 167 [2024-10-11 17:57:59,364 INFO L226 Difference]: Without dead ends: 167 [2024-10-11 17:57:59,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 210 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=274, Unknown=1, NotChecked=34, Total=380 [2024-10-11 17:57:59,365 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:59,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1039 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 845 Invalid, 0 Unknown, 156 Unchecked, 0.4s Time] [2024-10-11 17:57:59,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-11 17:57:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-10-11 17:57:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 93 states have (on average 1.8279569892473118) internal successors, (170), 158 states have internal predecessors, (170), 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) [2024-10-11 17:57:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2024-10-11 17:57:59,377 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 105 [2024-10-11 17:57:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:59,377 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2024-10-11 17:57:59,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:57:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2024-10-11 17:57:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 17:57:59,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:59,380 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-11 17:57:59,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 17:57:59,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 17:57:59,582 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)] === [2024-10-11 17:57:59,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 371802003, now seen corresponding path program 1 times [2024-10-11 17:57:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:59,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654392289] [2024-10-11 17:57:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:00,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:00,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 17:58:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:00,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:58:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:00,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:58:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:00,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 17:58:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 17:58:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 580 proven. 95 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-10-11 17:58:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654392289] [2024-10-11 17:58:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654392289] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911579771] [2024-10-11 17:58:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:01,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:01,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:01,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:01,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:58:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:02,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-10-11 17:58:02,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:02,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-11 17:58:13,188 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 [2024-10-11 17:58:13,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:13,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:58:13,262 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:58:13,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:58:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 445 proven. 499 refuted. 0 times theorem prover too weak. 272 trivial. 149 not checked. [2024-10-11 17:58:13,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911579771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:13,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:13,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 46 [2024-10-11 17:58:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633612484] [2024-10-11 17:58:13,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:13,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-11 17:58:13,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-11 17:58:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2111, Unknown=2, NotChecked=92, Total=2352 [2024-10-11 17:58:13,491 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand has 47 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 41 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:58:17,520 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] [2024-10-11 17:58:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:20,660 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2024-10-11 17:58:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 17:58:20,661 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 41 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 105 [2024-10-11 17:58:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:20,663 INFO L225 Difference]: With dead ends: 189 [2024-10-11 17:58:20,663 INFO L226 Difference]: Without dead ends: 189 [2024-10-11 17:58:20,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=314, Invalid=3720, Unknown=2, NotChecked=124, Total=4160 [2024-10-11 17:58:20,665 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 43 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:20,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2602 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2711 Invalid, 1 Unknown, 173 Unchecked, 5.9s Time] [2024-10-11 17:58:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-11 17:58:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 165. [2024-10-11 17:58:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 93 states have (on average 1.8064516129032258) internal successors, (168), 156 states have internal predecessors, (168), 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) [2024-10-11 17:58:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 180 transitions. [2024-10-11 17:58:20,670 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 180 transitions. Word has length 105 [2024-10-11 17:58:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:20,670 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 180 transitions. [2024-10-11 17:58:20,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 41 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:58:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 180 transitions. [2024-10-11 17:58:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-11 17:58:20,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:20,672 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-11 17:58:20,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:20,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:20,877 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)] === [2024-10-11 17:58:20,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1359030994, now seen corresponding path program 1 times [2024-10-11 17:58:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583403243] [2024-10-11 17:58:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 17:58:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:58:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:58:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 17:58:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 17:58:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 693 proven. 145 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-10-11 17:58:21,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:21,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583403243] [2024-10-11 17:58:21,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583403243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:21,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373023944] [2024-10-11 17:58:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:21,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:21,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:21,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:58:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:22,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 17:58:22,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:22,407 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |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 [2024-10-11 17:58:22,508 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:58:22,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:58:22,536 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 [2024-10-11 17:58:22,559 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:58:22,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:58:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 701 proven. 1 refuted. 0 times theorem prover too weak. 460 trivial. 203 not checked. [2024-10-11 17:58:22,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373023944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:22,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2024-10-11 17:58:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756996410] [2024-10-11 17:58:22,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:22,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:58:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:22,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:58:22,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2024-10-11 17:58:22,800 INFO L87 Difference]: Start difference. First operand 165 states and 180 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:23,254 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2024-10-11 17:58:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:58:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 106 [2024-10-11 17:58:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:23,256 INFO L225 Difference]: With dead ends: 162 [2024-10-11 17:58:23,256 INFO L226 Difference]: Without dead ends: 162 [2024-10-11 17:58:23,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=385, Unknown=2, NotChecked=82, Total=552 [2024-10-11 17:58:23,257 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 21 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:23,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 931 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 751 Invalid, 0 Unknown, 301 Unchecked, 0.4s Time] [2024-10-11 17:58:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-11 17:58:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-10-11 17:58:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 93 states have (on average 1.7741935483870968) internal successors, (165), 153 states have internal predecessors, (165), 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) [2024-10-11 17:58:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2024-10-11 17:58:23,262 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 106 [2024-10-11 17:58:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:23,262 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2024-10-11 17:58:23,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2024-10-11 17:58:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-11 17:58:23,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:23,265 INFO L215 NwaCegarLoop]: trace histogram [45, 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] [2024-10-11 17:58:23,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:23,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 17:58:23,469 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)] === [2024-10-11 17:58:23,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1359030993, now seen corresponding path program 1 times [2024-10-11 17:58:23,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885302357] [2024-10-11 17:58:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:24,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:24,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 17:58:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:24,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:58:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:24,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 17:58:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 17:58:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-11 17:58:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 693 proven. 240 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-10-11 17:58:25,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885302357] [2024-10-11 17:58:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885302357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831733310] [2024-10-11 17:58:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:25,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:25,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:25,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:58:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:27,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-10-11 17:58:27,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:27,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-11 17:58:58,405 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (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 [2024-10-11 17:58:58,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:58,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 17:58:58,554 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-11 17:58:58,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-11 17:58:58,837 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 [2024-10-11 17:58:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:58,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 17:58:58,950 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-11 17:58:58,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-11 17:59:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 456 proven. 338 refuted. 0 times theorem prover too weak. 158 trivial. 413 not checked. [2024-10-11 17:59:07,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831733310] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:07,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:59:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 52 [2024-10-11 17:59:07,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462790553] [2024-10-11 17:59:07,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:07,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-11 17:59:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-11 17:59:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2581, Unknown=11, NotChecked=206, Total=2970 [2024-10-11 17:59:07,520 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 49 states have internal predecessors, (90), 4 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-11 17:59:11,575 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] [2024-10-11 17:59:16,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:59:21,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:59:25,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]