./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-0235-1.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-0235-1.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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:57:50,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:57:50,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:57:50,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:57:50,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:57:50,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:57:50,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:57:50,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:57:50,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:57:50,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:57:50,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:57:50,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:57:50,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:57:50,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:57:50,942 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:57:50,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:57:50,943 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:57:50,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:57:50,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:57:50,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:57:50,943 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:57:50,944 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:57:50,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:57:50,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:57:50,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:57:50,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:57:50,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:57:50,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:57:50,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:57:50,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:57:50,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:57:50,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:57:50,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:57:50,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:50,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:57:50,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:57:50,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:57:50,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:57:50,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:57:50,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:57:50,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:57:50,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:57:50,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2024-10-11 17:57:51,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:57:51,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:57:51,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:57:51,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:57:51,247 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:57:51,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-1.i [2024-10-11 17:57:52,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:57:52,965 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:57:52,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-1.i [2024-10-11 17:57:52,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d28d83502/ead0387540bc4cb883c3016dfe8fc339/FLAGa6aa2b816 [2024-10-11 17:57:52,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d28d83502/ead0387540bc4cb883c3016dfe8fc339 [2024-10-11 17:57:52,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:57:52,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:57:53,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:53,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:57:53,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:57:53,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:52" (1/1) ... [2024-10-11 17:57:53,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5ff3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53, skipping insertion in model container [2024-10-11 17:57:53,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:52" (1/1) ... [2024-10-11 17:57:53,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:57:53,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:53,518 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:57:53,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:53,619 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:57:53,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53 WrapperNode [2024-10-11 17:57:53,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:53,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:53,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:57:53,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:57:53,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,693 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 240 [2024-10-11 17:57:53,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:53,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:57:53,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:57:53,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:57:53,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,761 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 9, 26]. 70 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-10-11 17:57:53,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:57:53,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:57:53,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:57:53,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:57:53,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (1/1) ... [2024-10-11 17:57:53,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:53,839 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 17:57:53,843 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 17:57:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 17:57:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:57:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 17:57:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 17:57:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 17:57:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 17:57:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 17:57:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 17:57:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-10-11 17:57:53,901 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-10-11 17:57:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:57:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 17:57:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 17:57:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 17:57:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2024-10-11 17:57:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2024-10-11 17:57:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 17:57:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 17:57:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 17:57:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:57:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:57:54,086 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:57:54,089 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:57:54,736 INFO L? ?]: Removed 203 outVars from TransFormulas that were not future-live. [2024-10-11 17:57:54,736 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:57:54,823 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:57:54,824 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 17:57:54,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:54 BoogieIcfgContainer [2024-10-11 17:57:54,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:57:54,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:57:54,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:57:54,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:57:54,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:57:52" (1/3) ... [2024-10-11 17:57:54,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185714dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:54, skipping insertion in model container [2024-10-11 17:57:54,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:53" (2/3) ... [2024-10-11 17:57:54,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185714dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:54, skipping insertion in model container [2024-10-11 17:57:54,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:54" (3/3) ... [2024-10-11 17:57:54,836 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2024-10-11 17:57:54,854 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:57:54,854 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2024-10-11 17:57:54,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:57:54,916 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;@4be0ffe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:57:54,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2024-10-11 17:57:54,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 104 states have (on average 2.125) internal successors, (221), 189 states have internal predecessors, (221), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:57:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 17:57:54,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:54,933 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 17:57:54,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:57:54,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash 473187, now seen corresponding path program 1 times [2024-10-11 17:57:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:54,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669457856] [2024-10-11 17:57:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:54,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,072 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 17:57:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669457856] [2024-10-11 17:57:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669457856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576542104] [2024-10-11 17:57:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:55,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 17:57:55,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 17:57:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:57:55,113 INFO L87 Difference]: Start difference. First operand has 203 states, 104 states have (on average 2.125) internal successors, (221), 189 states have internal predecessors, (221), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 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 17:57:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:55,194 INFO L93 Difference]: Finished difference Result 203 states and 232 transitions. [2024-10-11 17:57:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 17:57:55,201 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 17:57:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:55,211 INFO L225 Difference]: With dead ends: 203 [2024-10-11 17:57:55,211 INFO L226 Difference]: Without dead ends: 202 [2024-10-11 17:57:55,213 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 17:57:55,216 INFO L432 NwaCegarLoop]: 208 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, 208 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 17:57:55,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:57:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-10-11 17:57:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-10-11 17:57:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 104 states have (on average 2.0096153846153846) internal successors, (209), 188 states have internal predecessors, (209), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:57:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 231 transitions. [2024-10-11 17:57:55,264 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 231 transitions. Word has length 3 [2024-10-11 17:57:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:55,265 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 231 transitions. [2024-10-11 17:57:55,265 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 17:57:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 231 transitions. [2024-10-11 17:57:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 17:57:55,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:55,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 17:57:55,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:57:55,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:57:55,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 450599312, now seen corresponding path program 1 times [2024-10-11 17:57:55,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:55,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413628118] [2024-10-11 17:57:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:55,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,419 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 17:57:55,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:55,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413628118] [2024-10-11 17:57:55,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413628118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:55,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:55,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:55,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37617503] [2024-10-11 17:57:55,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:55,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:57:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:57:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:57:55,426 INFO L87 Difference]: Start difference. First operand 202 states and 231 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 17:57:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:55,608 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2024-10-11 17:57:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:57:55,608 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 17:57:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:55,610 INFO L225 Difference]: With dead ends: 201 [2024-10-11 17:57:55,610 INFO L226 Difference]: Without dead ends: 201 [2024-10-11 17:57:55,610 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 17:57:55,612 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:55,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 349 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-11 17:57:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-10-11 17:57:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 104 states have (on average 2.0) internal successors, (208), 187 states have internal predecessors, (208), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:57:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-10-11 17:57:55,629 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 5 [2024-10-11 17:57:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:55,630 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-10-11 17:57:55,630 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 17:57:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-10-11 17:57:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:57:55,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:55,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:57:55,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:57:55,631 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:57:55,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1083677024, now seen corresponding path program 1 times [2024-10-11 17:57:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191876101] [2024-10-11 17:57:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:55,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430049605] [2024-10-11 17:57:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:55,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:55,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:55,682 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 17:57:55,684 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 17:57:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:57:55,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:55,958 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 17:57:55,986 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 17:57:55,986 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:55,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:55,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191876101] [2024-10-11 17:57:55,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:55,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430049605] [2024-10-11 17:57:55,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430049605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:55,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:57:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444474062] [2024-10-11 17:57:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:55,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:57:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:57:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:57:55,994 INFO L87 Difference]: Start difference. First operand 201 states and 230 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 17:57:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:56,204 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2024-10-11 17:57:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:57:56,205 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 17:57:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:56,207 INFO L225 Difference]: With dead ends: 208 [2024-10-11 17:57:56,207 INFO L226 Difference]: Without dead ends: 208 [2024-10-11 17:57:56,207 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 17:57:56,209 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 9 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:56,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 547 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-11 17:57:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-10-11 17:57:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 110 states have (on average 1.9545454545454546) internal successors, (215), 193 states have internal predecessors, (215), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:57:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 237 transitions. [2024-10-11 17:57:56,232 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 237 transitions. Word has length 6 [2024-10-11 17:57:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:56,236 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 237 transitions. [2024-10-11 17:57:56,236 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 17:57:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 237 transitions. [2024-10-11 17:57:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 17:57:56,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:56,241 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 17:57:56,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 17:57:56,442 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 17:57:56,443 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:57:56,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash -730515872, now seen corresponding path program 1 times [2024-10-11 17:57:56,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:56,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207603046] [2024-10-11 17:57:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:56,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:56,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541035561] [2024-10-11 17:57:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:56,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:56,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:56,572 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 17:57:56,574 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 17:57:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:56,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-11 17:57:56,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:56,827 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 17:57:56,882 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 17:57:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:57:56,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-11 17:57:57,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:57,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207603046] [2024-10-11 17:57:57,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541035561] [2024-10-11 17:57:57,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541035561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:57,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:57,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2024-10-11 17:57:57,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020012349] [2024-10-11 17:57:57,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:57,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:57:57,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:57:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:57:57,231 INFO L87 Difference]: Start difference. First operand 208 states and 237 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:57:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:57,607 INFO L93 Difference]: Finished difference Result 219 states and 248 transitions. [2024-10-11 17:57:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:57:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2024-10-11 17:57:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:57,609 INFO L225 Difference]: With dead ends: 219 [2024-10-11 17:57:57,609 INFO L226 Difference]: Without dead ends: 210 [2024-10-11 17:57:57,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-10-11 17:57:57,610 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 17 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:57,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1101 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-10-11 17:57:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-10-11 17:57:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 113 states have (on average 1.920353982300885) internal successors, (217), 195 states have internal predecessors, (217), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:57:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2024-10-11 17:57:57,620 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 55 [2024-10-11 17:57:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:57,620 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2024-10-11 17:57:57,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:57:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2024-10-11 17:57:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 17:57:57,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:57,622 INFO L215 NwaCegarLoop]: trace histogram [11, 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 17:57:57,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:57:57,823 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 17:57:57,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:57:57,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1108566969, now seen corresponding path program 1 times [2024-10-11 17:57:57,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:57,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200749764] [2024-10-11 17:57:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:57:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:57:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:57:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:57:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 17:57:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 100 proven. 11 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-11 17:57:58,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:58,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200749764] [2024-10-11 17:57:58,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200749764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:58,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835896762] [2024-10-11 17:57:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:58,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:58,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:58,643 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 17:57:58,644 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 17:57:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 17:57:58,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:58,945 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 17:57:58,984 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:57:58,986 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 17:57:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 110 trivial. 10 not checked. [2024-10-11 17:57:58,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:59,217 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 17:57:59,218 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 17:57:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 105 proven. 11 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-11 17:57:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835896762] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:59,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:57:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-11 17:57:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054317785] [2024-10-11 17:57:59,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:59,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:57:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:57:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2024-10-11 17:57:59,248 INFO L87 Difference]: Start difference. First operand 210 states and 239 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 17:58:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:00,347 INFO L93 Difference]: Finished difference Result 300 states and 348 transitions. [2024-10-11 17:58:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:58:00,347 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 71 [2024-10-11 17:58:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:00,350 INFO L225 Difference]: With dead ends: 300 [2024-10-11 17:58:00,350 INFO L226 Difference]: Without dead ends: 300 [2024-10-11 17:58:00,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=274, Unknown=1, NotChecked=34, Total=380 [2024-10-11 17:58:00,352 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 111 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 332 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:00,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 643 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1581 Invalid, 0 Unknown, 332 Unchecked, 1.0s Time] [2024-10-11 17:58:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-10-11 17:58:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 208. [2024-10-11 17:58:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 113 states have (on average 1.9026548672566372) internal successors, (215), 193 states have internal predecessors, (215), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:58:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 237 transitions. [2024-10-11 17:58:00,371 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 237 transitions. Word has length 71 [2024-10-11 17:58:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:00,372 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 237 transitions. [2024-10-11 17:58:00,372 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 17:58:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 237 transitions. [2024-10-11 17:58:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 17:58:00,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:00,374 INFO L215 NwaCegarLoop]: trace histogram [11, 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 17:58:00,392 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 17:58:00,577 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 17:58:00,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:58:00,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1108566968, now seen corresponding path program 1 times [2024-10-11 17:58:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:00,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305779845] [2024-10-11 17:58:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:00,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458085247] [2024-10-11 17:58:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:00,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:00,798 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 17:58:00,799 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 17:58:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:01,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-11 17:58:01,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:01,103 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 17:58:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-11 17:58:02,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-10-11 17:58:03,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:03,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305779845] [2024-10-11 17:58:03,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:03,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458085247] [2024-10-11 17:58:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458085247] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:03,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6] total 22 [2024-10-11 17:58:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074940973] [2024-10-11 17:58:03,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:03,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 17:58:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 17:58:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-10-11 17:58:03,147 INFO L87 Difference]: Start difference. First operand 208 states and 237 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:07,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:12,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:17,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:21,470 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 17:58:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:24,856 INFO L93 Difference]: Finished difference Result 309 states and 358 transitions. [2024-10-11 17:58:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 17:58:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-10-11 17:58:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:24,858 INFO L225 Difference]: With dead ends: 309 [2024-10-11 17:58:24,858 INFO L226 Difference]: Without dead ends: 303 [2024-10-11 17:58:24,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 17:58:24,860 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 146 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:24,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 838 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2825 Invalid, 4 Unknown, 0 Unchecked, 18.9s Time] [2024-10-11 17:58:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-10-11 17:58:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 211. [2024-10-11 17:58:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 116 states have (on average 1.8793103448275863) internal successors, (218), 196 states have internal predecessors, (218), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:58:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 240 transitions. [2024-10-11 17:58:24,872 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 240 transitions. Word has length 71 [2024-10-11 17:58:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:24,873 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 240 transitions. [2024-10-11 17:58:24,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 240 transitions. [2024-10-11 17:58:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 17:58:24,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:24,877 INFO L215 NwaCegarLoop]: trace histogram [14, 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 17:58:24,900 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 17:58:25,077 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 17:58:25,078 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:58:25,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1995603452, now seen corresponding path program 2 times [2024-10-11 17:58:25,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:25,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779886217] [2024-10-11 17:58:25,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:25,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:25,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596158917] [2024-10-11 17:58:25,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:58:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:25,236 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 17:58:25,237 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 17:58:25,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:58:25,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:58:25,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 17:58:25,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:25,660 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 17:58:25,699 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 17:58:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 182 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-11 17:58:25,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 42 proven. 37 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-11 17:58:26,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779886217] [2024-10-11 17:58:26,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596158917] [2024-10-11 17:58:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596158917] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:26,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:26,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-10-11 17:58:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298698948] [2024-10-11 17:58:26,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:26,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 17:58:26,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 17:58:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 17:58:26,107 INFO L87 Difference]: Start difference. First operand 211 states and 240 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:58:26,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:26,768 INFO L93 Difference]: Finished difference Result 221 states and 252 transitions. [2024-10-11 17:58:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 17:58:26,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2024-10-11 17:58:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:26,772 INFO L225 Difference]: With dead ends: 221 [2024-10-11 17:58:26,772 INFO L226 Difference]: Without dead ends: 215 [2024-10-11 17:58:26,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2024-10-11 17:58:26,774 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 18 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:26,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1678 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 17:58:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-10-11 17:58:26,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-10-11 17:58:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 120 states have (on average 1.85) internal successors, (222), 200 states have internal predecessors, (222), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:58:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 244 transitions. [2024-10-11 17:58:26,782 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 244 transitions. Word has length 74 [2024-10-11 17:58:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:26,782 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 244 transitions. [2024-10-11 17:58:26,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:58:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 244 transitions. [2024-10-11 17:58:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-11 17:58:26,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:26,783 INFO L215 NwaCegarLoop]: trace histogram [34, 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 17:58:26,807 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 17:58:26,984 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 17:58:26,984 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:58:26,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1345772796, now seen corresponding path program 3 times [2024-10-11 17:58:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:26,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971232567] [2024-10-11 17:58:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:26,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:27,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070651176] [2024-10-11 17:58:27,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:58:27,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:27,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:27,260 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 17:58:27,262 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 17:58:27,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 17:58:27,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:58:27,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 17:58:27,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:27,704 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 17:58:27,714 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 17:58:27,912 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 17:58:27,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:27,968 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 17:58:27,976 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:58:27,976 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 17:58:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 40 not checked. [2024-10-11 17:58:27,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971232567] [2024-10-11 17:58:28,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070651176] [2024-10-11 17:58:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070651176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:28,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:58:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-11 17:58:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222123099] [2024-10-11 17:58:28,096 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:28,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 17:58:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 17:58:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2024-10-11 17:58:28,098 INFO L87 Difference]: Start difference. First operand 215 states and 244 transitions. Second operand has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 17:58:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:29,205 INFO L93 Difference]: Finished difference Result 305 states and 353 transitions. [2024-10-11 17:58:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:58:29,206 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 94 [2024-10-11 17:58:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:29,210 INFO L225 Difference]: With dead ends: 305 [2024-10-11 17:58:29,210 INFO L226 Difference]: Without dead ends: 305 [2024-10-11 17:58:29,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=202, Unknown=1, NotChecked=28, Total=272 [2024-10-11 17:58:29,212 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 109 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:29,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 370 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1616 Invalid, 0 Unknown, 329 Unchecked, 1.0s Time] [2024-10-11 17:58:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-10-11 17:58:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 213. [2024-10-11 17:58:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 120 states have (on average 1.8333333333333333) internal successors, (220), 198 states have internal predecessors, (220), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:58:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 242 transitions. [2024-10-11 17:58:29,222 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 242 transitions. Word has length 94 [2024-10-11 17:58:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:29,223 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 242 transitions. [2024-10-11 17:58:29,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 17:58:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 242 transitions. [2024-10-11 17:58:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-11 17:58:29,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:29,226 INFO L215 NwaCegarLoop]: trace histogram [34, 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 17:58:29,245 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 17:58:29,426 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 17:58:29,427 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:58:29,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1230710346, now seen corresponding path program 1 times [2024-10-11 17:58:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:29,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499593120] [2024-10-11 17:58:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 17:58:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 17:58:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:58:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 17:58:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-11 17:58:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 444 proven. 94 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-10-11 17:58:30,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499593120] [2024-10-11 17:58:30,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499593120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967400396] [2024-10-11 17:58:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:30,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:30,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:30,806 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 17:58:30,807 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 17:58:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:31,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 17:58:31,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:31,271 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 17:58:31,364 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:58:31,364 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 17:58:31,402 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 17:58:31,434 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:58:31,435 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 17:58:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 452 proven. 1 refuted. 0 times theorem prover too weak. 284 trivial. 133 not checked. [2024-10-11 17:58:31,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967400396] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:31,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 15 [2024-10-11 17:58:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235466156] [2024-10-11 17:58:31,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:31,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 17:58:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 17:58:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=226, Unknown=2, NotChecked=62, Total=342 [2024-10-11 17:58:31,688 INFO L87 Difference]: Start difference. First operand 213 states and 242 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 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 17:58:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:32,626 INFO L93 Difference]: Finished difference Result 302 states and 350 transitions. [2024-10-11 17:58:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:58:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 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 95 [2024-10-11 17:58:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:32,628 INFO L225 Difference]: With dead ends: 302 [2024-10-11 17:58:32,628 INFO L226 Difference]: Without dead ends: 302 [2024-10-11 17:58:32,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=348, Unknown=2, NotChecked=78, Total=506 [2024-10-11 17:58:32,629 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 428 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 653 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:32,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 726 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1643 Invalid, 0 Unknown, 653 Unchecked, 0.8s Time] [2024-10-11 17:58:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-10-11 17:58:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 210. [2024-10-11 17:58:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 120 states have (on average 1.8083333333333333) internal successors, (217), 195 states have internal predecessors, (217), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-11 17:58:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2024-10-11 17:58:32,637 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 95 [2024-10-11 17:58:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:32,637 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2024-10-11 17:58:32,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 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 17:58:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2024-10-11 17:58:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-11 17:58:32,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:32,639 INFO L215 NwaCegarLoop]: trace histogram [34, 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 17:58:32,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 17:58:32,842 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 17:58:32,843 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:58:32,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1230710345, now seen corresponding path program 1 times [2024-10-11 17:58:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231180842] [2024-10-11 17:58:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:32,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 17:58:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 17:58:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:58:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 17:58:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:34,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-11 17:58:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 376 proven. 61 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-10-11 17:58:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231180842] [2024-10-11 17:58:35,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231180842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869726997] [2024-10-11 17:58:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:35,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:35,090 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 17:58:35,092 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 17:58:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:36,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-10-11 17:58:36,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:36,597 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 17:58:38,491 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 17:58:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:38,830 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 17:58:38,858 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-11 17:58:38,858 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 17:58:38,967 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 17:58:39,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:39,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:58:39,032 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-11 17:58:39,033 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 17:58:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 349 proven. 233 refuted. 0 times theorem prover too weak. 138 trivial. 150 not checked. [2024-10-11 17:58:39,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:39,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869726997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:39,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:39,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 32] total 49 [2024-10-11 17:58:39,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524531785] [2024-10-11 17:58:39,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:39,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-11 17:58:39,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-11 17:58:39,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2188, Unknown=2, NotChecked=190, Total=2550 [2024-10-11 17:58:39,284 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 49 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 44 states have internal predecessors, (83), 4 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-11 17:58:43,330 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 17:58:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:48,369 INFO L93 Difference]: Finished difference Result 344 states and 411 transitions. [2024-10-11 17:58:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 17:58:48,370 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 44 states have internal predecessors, (83), 4 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 95 [2024-10-11 17:58:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:48,372 INFO L225 Difference]: With dead ends: 344 [2024-10-11 17:58:48,372 INFO L226 Difference]: Without dead ends: 336 [2024-10-11 17:58:48,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=369, Invalid=4327, Unknown=4, NotChecked=270, Total=4970 [2024-10-11 17:58:48,374 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 355 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 5796 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 6584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5796 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 751 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:48,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1407 Invalid, 6584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5796 Invalid, 1 Unknown, 751 Unchecked, 7.4s Time] [2024-10-11 17:58:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-10-11 17:58:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 234. [2024-10-11 17:58:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 140 states have (on average 1.7285714285714286) internal successors, (242), 215 states have internal predecessors, (242), 13 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (19), 15 states have call predecessors, (19), 13 states have call successors, (19) [2024-10-11 17:58:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 274 transitions. [2024-10-11 17:58:48,389 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 274 transitions. Word has length 95 [2024-10-11 17:58:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:48,390 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 274 transitions. [2024-10-11 17:58:48,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 44 states have internal predecessors, (83), 4 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-11 17:58:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 274 transitions. [2024-10-11 17:58:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 17:58:48,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:48,391 INFO L215 NwaCegarLoop]: trace histogram [36, 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 17:58:48,420 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 17:58:48,592 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 17:58:48,592 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2024-10-11 17:58:48,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:48,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1508653419, now seen corresponding path program 2 times [2024-10-11 17:58:48,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:48,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097047338] [2024-10-11 17:58:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:48,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:49,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:49,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 17:58:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:49,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 17:58:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:49,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:58:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:49,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-11 17:58:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:50,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-11 17:58:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 417 proven. 73 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-10-11 17:58:50,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:50,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097047338] [2024-10-11 17:58:50,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097047338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:50,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728983039] [2024-10-11 17:58:50,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:58:50,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:50,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:50,754 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 17:58:50,755 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 17:58:51,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:58:51,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:58:51,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-10-11 17:58:51,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:51,415 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 17:58:57,104 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 17:58:57,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:57,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 17:58:57,212 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-11 17:58:57,212 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 17:58:57,365 WARN L873 $PredicateComparison]: unable to prove that (and (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))) (exists ((|v_zalloc_or_die_calloc_model_~size#1_233| Int) (|v_zalloc_or_die_calloc_model_~nmemb#1_233| Int)) (= (* |v_zalloc_or_die_calloc_model_~size#1_233| |v_zalloc_or_die_calloc_model_~nmemb#1_233|) |c_zalloc_or_die_#Ultimate.C_memset_#amount#1|))) is different from true [2024-10-11 17:58:57,727 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 17:58:57,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:58:57,758 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 17:58:57,773 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-11 17:58:57,774 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 17:58:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 357 proven. 279 refuted. 0 times theorem prover too weak. 141 trivial. 174 not checked. [2024-10-11 17:58:57,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:58,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728983039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:58,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 35] total 53 [2024-10-11 17:58:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505471454] [2024-10-11 17:58:58,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:58,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-11 17:58:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-11 17:58:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2483, Unknown=3, NotChecked=306, Total=2970 [2024-10-11 17:58:58,107 INFO L87 Difference]: Start difference. First operand 234 states and 274 transitions. Second operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 48 states have internal predecessors, (84), 4 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-11 17:59:02,133 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 17:59:06,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:59:11,167 WARN L539 Checker$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 17:59:15,413 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]