./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0234-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0234-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:10:20,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:10:20,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:10:20,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:10:20,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:10:20,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:10:20,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:10:20,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:10:20,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:10:20,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:10:20,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:10:20,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:10:20,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:10:20,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:10:20,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:10:20,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:10:20,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:10:20,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:10:20,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:10:20,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:10:20,113 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:10:20,116 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:10:20,116 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:10:20,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:10:20,117 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:10:20,117 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:10:20,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:10:20,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:10:20,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:10:20,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:10:20,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:10:20,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:10:20,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:10:20,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:10:20,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:10:20,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:10:20,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:10:20,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:10:20,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:10:20,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:10:20,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:10:20,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:10:20,121 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2024-11-10 15:10:20,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:10:20,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:10:20,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:10:20,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:10:20,343 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:10:20,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-1.i [2024-11-10 15:10:21,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:10:21,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:10:21,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-1.i [2024-11-10 15:10:21,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853bf0ef0/efaee0fb5e1e423db922b54fae2ad1c7/FLAG0eb974c2a [2024-11-10 15:10:21,786 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853bf0ef0/efaee0fb5e1e423db922b54fae2ad1c7 [2024-11-10 15:10:21,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:10:21,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:10:21,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:10:21,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:10:21,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:10:21,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:10:21" (1/1) ... [2024-11-10 15:10:21,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b5e0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:21, skipping insertion in model container [2024-11-10 15:10:21,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:10:21" (1/1) ... [2024-11-10 15:10:21,829 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:10:22,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:10:22,144 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:10:22,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:10:22,226 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:10:22,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22 WrapperNode [2024-11-10 15:10:22,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:10:22,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:10:22,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:10:22,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:10:22,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,270 INFO L138 Inliner]: procedures = 188, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 203 [2024-11-10 15:10:22,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:10:22,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:10:22,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:10:22,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:10:22,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,308 INFO L175 MemorySlicer]: Split 32 memory accesses to 3 slices as follows [2, 26, 4]. 81 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 12, 1]. [2024-11-10 15:10:22,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:10:22,323 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:10:22,323 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:10:22,323 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:10:22,324 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (1/1) ... [2024-11-10 15:10:22,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:10:22,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:22,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:10:22,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:10:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:10:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:10:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-10 15:10:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-10 15:10:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:10:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 15:10:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 15:10:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 15:10:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:10:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:10:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 15:10:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:10:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:10:22,532 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:10:22,534 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:10:22,619 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2024-11-10 15:10:22,924 INFO L? ?]: Removed 197 outVars from TransFormulas that were not future-live. [2024-11-10 15:10:22,925 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:10:22,939 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:10:22,939 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:10:22,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:10:22 BoogieIcfgContainer [2024-11-10 15:10:22,940 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:10:22,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:10:22,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:10:22,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:10:22,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:10:21" (1/3) ... [2024-11-10 15:10:22,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bae1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:10:22, skipping insertion in model container [2024-11-10 15:10:22,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:10:22" (2/3) ... [2024-11-10 15:10:22,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bae1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:10:22, skipping insertion in model container [2024-11-10 15:10:22,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:10:22" (3/3) ... [2024-11-10 15:10:22,948 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2024-11-10 15:10:22,960 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:10:22,961 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2024-11-10 15:10:22,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:10:23,004 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;@2be38b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:10:23,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-10 15:10:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 117 states have (on average 1.829059829059829) internal successors, (214), 192 states have internal predecessors, (214), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-10 15:10:23,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:23,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-10 15:10:23,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:23,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash 7756453, now seen corresponding path program 1 times [2024-11-10 15:10:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:23,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819587473] [2024-11-10 15:10:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:10:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819587473] [2024-11-10 15:10:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819587473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:10:23,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:10:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:10:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945909815] [2024-11-10 15:10:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:10:23,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 15:10:23,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:23,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 15:10:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:10:23,159 INFO L87 Difference]: Start difference. First operand has 200 states, 117 states have (on average 1.829059829059829) internal successors, (214), 192 states have internal predecessors, (214), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:23,177 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2024-11-10 15:10:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 15:10:23,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-10 15:10:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:23,185 INFO L225 Difference]: With dead ends: 200 [2024-11-10 15:10:23,185 INFO L226 Difference]: Without dead ends: 197 [2024-11-10 15:10:23,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:10:23,188 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:23,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:10:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-10 15:10:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-10 15:10:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 189 states have internal predecessors, (200), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2024-11-10 15:10:23,269 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 4 [2024-11-10 15:10:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:23,270 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2024-11-10 15:10:23,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2024-11-10 15:10:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:10:23,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:23,272 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:10:23,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:10:23,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:23,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:23,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1135911666, now seen corresponding path program 1 times [2024-11-10 15:10:23,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908005628] [2024-11-10 15:10:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:23,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:10:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908005628] [2024-11-10 15:10:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908005628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:10:23,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:10:23,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:10:23,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755777615] [2024-11-10 15:10:23,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:10:23,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:10:23,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:23,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:10:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:10:23,423 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:23,547 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2024-11-10 15:10:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:10:23,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-10 15:10:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:23,549 INFO L225 Difference]: With dead ends: 196 [2024-11-10 15:10:23,550 INFO L226 Difference]: Without dead ends: 196 [2024-11-10 15:10:23,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:10:23,551 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:23,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 333 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:10:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-10 15:10:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-10 15:10:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 115 states have (on average 1.7304347826086957) internal successors, (199), 188 states have internal predecessors, (199), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 211 transitions. [2024-11-10 15:10:23,563 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 211 transitions. Word has length 6 [2024-11-10 15:10:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:23,565 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 211 transitions. [2024-11-10 15:10:23,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 211 transitions. [2024-11-10 15:10:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:10:23,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:23,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:23,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:10:23,566 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:23,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash -853523297, now seen corresponding path program 1 times [2024-11-10 15:10:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:23,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872867693] [2024-11-10 15:10:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:10:23,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917781382] [2024-11-10 15:10:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:23,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:23,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:23,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:23,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:10:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:23,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:10:23,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:23,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 15:10:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:10:23,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:10:23,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:23,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872867693] [2024-11-10 15:10:23,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:10:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917781382] [2024-11-10 15:10:23,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917781382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:10:23,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:10:23,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:10:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80606882] [2024-11-10 15:10:23,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:10:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:10:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:10:23,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:10:23,764 INFO L87 Difference]: Start difference. First operand 196 states and 211 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:23,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:23,895 INFO L93 Difference]: Finished difference Result 206 states and 221 transitions. [2024-11-10 15:10:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:10:23,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-10 15:10:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:23,896 INFO L225 Difference]: With dead ends: 206 [2024-11-10 15:10:23,898 INFO L226 Difference]: Without dead ends: 206 [2024-11-10 15:10:23,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:10:23,899 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 13 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:23,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 542 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:10:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-10 15:10:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-10 15:10:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 124 states have (on average 1.685483870967742) internal successors, (209), 197 states have internal predecessors, (209), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2024-11-10 15:10:23,914 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 7 [2024-11-10 15:10:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:23,915 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2024-11-10 15:10:23,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:10:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2024-11-10 15:10:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-10 15:10:23,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:23,916 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:23,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 15:10:24,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:24,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:24,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash 716667005, now seen corresponding path program 1 times [2024-11-10 15:10:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:24,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127801778] [2024-11-10 15:10:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:10:24,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731925086] [2024-11-10 15:10:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:24,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:24,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:24,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:24,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:10:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:24,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-10 15:10:24,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 15:10:24,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:10:24,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127801778] [2024-11-10 15:10:24,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:10:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731925086] [2024-11-10 15:10:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731925086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:10:24,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:10:24,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:10:24,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243883307] [2024-11-10 15:10:24,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:10:24,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:10:24,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:10:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:10:24,406 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:10:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:24,443 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2024-11-10 15:10:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:10:24,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2024-11-10 15:10:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:24,445 INFO L225 Difference]: With dead ends: 218 [2024-11-10 15:10:24,445 INFO L226 Difference]: Without dead ends: 208 [2024-11-10 15:10:24,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:10:24,446 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:24,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 800 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:10:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-10 15:10:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-10 15:10:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 199 states have internal predecessors, (211), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2024-11-10 15:10:24,460 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 71 [2024-11-10 15:10:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:24,460 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2024-11-10 15:10:24,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:10:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2024-11-10 15:10:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-10 15:10:24,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:24,462 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:24,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 15:10:24,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 15:10:24,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:24,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1080237263, now seen corresponding path program 1 times [2024-11-10 15:10:24,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:24,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013427275] [2024-11-10 15:10:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:10:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459194218] [2024-11-10 15:10:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:24,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:24,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:24,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:24,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:10:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:10:25,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:25,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 15:10:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-10 15:10:25,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:10:25,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013427275] [2024-11-10 15:10:25,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:10:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459194218] [2024-11-10 15:10:25,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459194218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:10:25,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:10:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:10:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211077023] [2024-11-10 15:10:25,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:10:25,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:10:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:10:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:10:25,140 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-10 15:10:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:25,225 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2024-11-10 15:10:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:10:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-10 15:10:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:25,229 INFO L225 Difference]: With dead ends: 207 [2024-11-10 15:10:25,229 INFO L226 Difference]: Without dead ends: 207 [2024-11-10 15:10:25,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:10:25,230 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 13 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:25,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 565 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:10:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-10 15:10:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-10 15:10:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 126 states have (on average 1.6666666666666667) internal successors, (210), 198 states have internal predecessors, (210), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2024-11-10 15:10:25,240 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 76 [2024-11-10 15:10:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:25,242 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2024-11-10 15:10:25,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-10 15:10:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2024-11-10 15:10:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-10 15:10:25,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:25,244 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:25,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 15:10:25,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:25,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:25,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -286221332, now seen corresponding path program 1 times [2024-11-10 15:10:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:25,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628933975] [2024-11-10 15:10:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:25,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:10:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-10 15:10:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-10 15:10:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-10 15:10:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-10 15:10:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:25,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 15:10:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 96 proven. 12 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-10 15:10:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628933975] [2024-11-10 15:10:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628933975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621898997] [2024-11-10 15:10:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:26,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:26,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:10:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:26,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 15:10:26,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:26,304 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-11-10 15:10:26,346 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:10:26,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-10 15:10:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 101 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 11 not checked. [2024-11-10 15:10:26,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:10:26,570 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 15:10:26,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-10 15:10:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 101 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-10 15:10:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621898997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:10:26,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:10:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 17 [2024-11-10 15:10:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727717299] [2024-11-10 15:10:26,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:10:26,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:10:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:10:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306 [2024-11-10 15:10:26,592 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 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) [2024-11-10 15:10:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:27,206 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2024-11-10 15:10:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:10:27,206 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 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 85 [2024-11-10 15:10:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:27,207 INFO L225 Difference]: With dead ends: 205 [2024-11-10 15:10:27,207 INFO L226 Difference]: Without dead ends: 205 [2024-11-10 15:10:27,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=344, Unknown=1, NotChecked=38, Total=462 [2024-11-10 15:10:27,208 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 14 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:27,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1625 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 997 Invalid, 0 Unknown, 199 Unchecked, 0.5s Time] [2024-11-10 15:10:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-10 15:10:27,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-10 15:10:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 126 states have (on average 1.6507936507936507) internal successors, (208), 196 states have internal predecessors, (208), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2024-11-10 15:10:27,213 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 85 [2024-11-10 15:10:27,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:27,213 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2024-11-10 15:10:27,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 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) [2024-11-10 15:10:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2024-11-10 15:10:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-10 15:10:27,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:27,214 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:27,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:10:27,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:27,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:27,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -286221331, now seen corresponding path program 1 times [2024-11-10 15:10:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499067252] [2024-11-10 15:10:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:10:27,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840114421] [2024-11-10 15:10:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:27,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:27,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:10:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:27,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 15:10:27,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:27,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:10:27,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:10:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-10 15:10:27,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:10:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-10 15:10:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499067252] [2024-11-10 15:10:28,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:10:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840114421] [2024-11-10 15:10:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840114421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:10:28,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:10:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-11-10 15:10:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087364141] [2024-11-10 15:10:28,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:10:28,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:10:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:10:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:10:28,016 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-10 15:10:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:28,326 INFO L93 Difference]: Finished difference Result 224 states and 240 transitions. [2024-11-10 15:10:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 15:10:28,327 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 85 [2024-11-10 15:10:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:28,327 INFO L225 Difference]: With dead ends: 224 [2024-11-10 15:10:28,327 INFO L226 Difference]: Without dead ends: 209 [2024-11-10 15:10:28,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:10:28,328 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 25 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:28,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1618 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:10:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-10 15:10:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-10 15:10:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.6307692307692307) internal successors, (212), 200 states have internal predecessors, (212), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2024-11-10 15:10:28,332 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 85 [2024-11-10 15:10:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:28,332 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2024-11-10 15:10:28,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-10 15:10:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2024-11-10 15:10:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-10 15:10:28,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:28,333 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:28,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:10:28,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:28,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:28,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 960951245, now seen corresponding path program 2 times [2024-11-10 15:10:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:28,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510465011] [2024-11-10 15:10:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:28,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:10:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67944352] [2024-11-10 15:10:28,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:10:28,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:28,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:28,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:28,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:10:29,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:10:29,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:10:29,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-10 15:10:29,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:29,465 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-10 15:10:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:10:29,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-10 15:10:29,532 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:10:29,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 15:10:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 23 not checked. [2024-11-10 15:10:29,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:10:29,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510465011] [2024-11-10 15:10:29,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:10:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67944352] [2024-11-10 15:10:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67944352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:29,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:10:29,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-10 15:10:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085729792] [2024-11-10 15:10:29,630 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-10 15:10:29,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:10:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:10:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2024-11-10 15:10:29,632 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:10:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:30,162 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2024-11-10 15:10:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:10:30,162 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 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 93 [2024-11-10 15:10:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:30,164 INFO L225 Difference]: With dead ends: 207 [2024-11-10 15:10:30,164 INFO L226 Difference]: Without dead ends: 207 [2024-11-10 15:10:30,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2024-11-10 15:10:30,165 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 23 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:30,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1006 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 818 Invalid, 0 Unknown, 196 Unchecked, 0.4s Time] [2024-11-10 15:10:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-10 15:10:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-10 15:10:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 130 states have (on average 1.6153846153846154) internal successors, (210), 198 states have internal predecessors, (210), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2024-11-10 15:10:30,170 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 93 [2024-11-10 15:10:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:30,171 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2024-11-10 15:10:30,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:10:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2024-11-10 15:10:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-10 15:10:30,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:30,173 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:30,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:10:30,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:30,374 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:30,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash 56182153, now seen corresponding path program 1 times [2024-11-10 15:10:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:30,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105559765] [2024-11-10 15:10:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:30,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:10:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:30,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 15:10:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:30,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-10 15:10:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:30,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 15:10:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:30,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-10 15:10:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:30,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-10 15:10:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 171 proven. 40 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-10 15:10:31,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:31,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105559765] [2024-11-10 15:10:31,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105559765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:31,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840829634] [2024-11-10 15:10:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:31,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:31,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:31,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:10:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:31,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 15:10:31,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:31,340 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-11-10 15:10:31,362 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:10:31,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-10 15:10:31,404 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:10:31,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-10 15:10:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 38 not checked. [2024-11-10 15:10:31,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:10:31,664 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 15:10:31,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-10 15:10:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 179 proven. 40 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-10 15:10:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840829634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:10:31,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:10:31,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 18 [2024-11-10 15:10:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521929263] [2024-11-10 15:10:31,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:10:31,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 15:10:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 15:10:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=256, Unknown=1, NotChecked=32, Total=342 [2024-11-10 15:10:31,677 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-10 15:10:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:32,196 INFO L93 Difference]: Finished difference Result 204 states and 219 transitions. [2024-11-10 15:10:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:10:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2024-11-10 15:10:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:32,198 INFO L225 Difference]: With dead ends: 204 [2024-11-10 15:10:32,198 INFO L226 Difference]: Without dead ends: 204 [2024-11-10 15:10:32,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 187 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=424, Unknown=1, NotChecked=42, Total=552 [2024-11-10 15:10:32,198 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 28 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:32,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1555 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1005 Invalid, 0 Unknown, 194 Unchecked, 0.4s Time] [2024-11-10 15:10:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-10 15:10:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-10 15:10:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 130 states have (on average 1.5923076923076922) internal successors, (207), 195 states have internal predecessors, (207), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 15:10:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 219 transitions. [2024-11-10 15:10:32,202 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 219 transitions. Word has length 95 [2024-11-10 15:10:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:32,202 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 219 transitions. [2024-11-10 15:10:32,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-10 15:10:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 219 transitions. [2024-11-10 15:10:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-10 15:10:32,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:32,203 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:32,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 15:10:32,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:32,408 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:32,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash 56182154, now seen corresponding path program 1 times [2024-11-10 15:10:32,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:32,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486321567] [2024-11-10 15:10:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:32,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:10:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 15:10:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-10 15:10:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 15:10:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-10 15:10:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-10 15:10:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 160 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-10 15:10:33,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486321567] [2024-11-10 15:10:33,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486321567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789128855] [2024-11-10 15:10:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:33,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:33,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:33,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:33,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:10:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:33,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-10 15:10:33,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:33,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-10 15:10:42,862 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-10 15:10:43,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:10:43,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-10 15:10:43,039 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:10:43,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 15:10:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 148 proven. 55 refuted. 0 times theorem prover too weak. 96 trivial. 26 not checked. [2024-11-10 15:10:43,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:10:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789128855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:43,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:10:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 35 [2024-11-10 15:10:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133207795] [2024-11-10 15:10:43,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:10:43,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 15:10:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:10:43,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 15:10:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1148, Unknown=3, NotChecked=68, Total=1332 [2024-11-10 15:10:43,200 INFO L87 Difference]: Start difference. First operand 204 states and 219 transitions. Second operand has 35 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 29 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:10:47,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:10:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:10:48,955 INFO L93 Difference]: Finished difference Result 213 states and 233 transitions. [2024-11-10 15:10:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 15:10:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 29 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-10 15:10:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:10:48,957 INFO L225 Difference]: With dead ends: 213 [2024-11-10 15:10:48,958 INFO L226 Difference]: Without dead ends: 210 [2024-11-10 15:10:48,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=190, Invalid=1791, Unknown=3, NotChecked=86, Total=2070 [2024-11-10 15:10:48,958 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 9 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:10:48,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2341 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1909 Invalid, 1 Unknown, 209 Unchecked, 5.2s Time] [2024-11-10 15:10:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-10 15:10:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-11-10 15:10:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 135 states have (on average 1.5777777777777777) internal successors, (213), 201 states have internal predecessors, (213), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-10 15:10:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 229 transitions. [2024-11-10 15:10:48,963 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 229 transitions. Word has length 95 [2024-11-10 15:10:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:10:48,964 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 229 transitions. [2024-11-10 15:10:48,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 29 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:10:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 229 transitions. [2024-11-10 15:10:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-10 15:10:48,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:10:48,965 INFO L215 NwaCegarLoop]: trace histogram [15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:10:48,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 15:10:49,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 15:10:49,169 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:10:49,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:10:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash -338070822, now seen corresponding path program 2 times [2024-11-10 15:10:49,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:10:49,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908552580] [2024-11-10 15:10:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:10:49,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:10:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:49,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:10:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:49,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 15:10:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:49,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-10 15:10:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:49,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 15:10:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:49,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-10 15:10:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:50,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 15:10:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:10:50,260 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 172 proven. 34 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-10 15:10:50,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:10:50,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908552580] [2024-11-10 15:10:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908552580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:10:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922549093] [2024-11-10 15:10:50,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:10:50,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:10:50,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:10:50,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:10:50,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 15:10:50,569 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:10:50,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:10:50,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-10 15:10:50,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:10:50,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:10:59,662 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-10 15:10:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:10:59,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 15:10:59,902 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:10:59,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 15:11:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 177 proven. 36 refuted. 0 times theorem prover too weak. 124 trivial. 8 not checked. [2024-11-10 15:11:00,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:11:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922549093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:11:00,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:11:00,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 37 [2024-11-10 15:11:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920265320] [2024-11-10 15:11:00,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:11:00,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 15:11:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 15:11:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1296, Unknown=2, NotChecked=72, Total=1482 [2024-11-10 15:11:00,216 INFO L87 Difference]: Start difference. First operand 210 states and 229 transitions. Second operand has 37 states, 35 states have (on average 2.142857142857143) internal successors, (75), 31 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:11:05,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:09,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:14,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:18,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:23,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:27,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:31,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:35,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:11:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:38,197 INFO L93 Difference]: Finished difference Result 219 states and 243 transitions. [2024-11-10 15:11:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 15:11:38,197 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.142857142857143) internal successors, (75), 31 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-10 15:11:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:38,200 INFO L225 Difference]: With dead ends: 219 [2024-11-10 15:11:38,200 INFO L226 Difference]: Without dead ends: 216 [2024-11-10 15:11:38,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=212, Invalid=2142, Unknown=2, NotChecked=94, Total=2450 [2024-11-10 15:11:38,201 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 15 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:38,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2516 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2491 Invalid, 8 Unknown, 213 Unchecked, 36.1s Time] [2024-11-10 15:11:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-10 15:11:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2024-11-10 15:11:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 136 states have (on average 1.5808823529411764) internal successors, (215), 202 states have internal predecessors, (215), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-10 15:11:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 231 transitions. [2024-11-10 15:11:38,207 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 231 transitions. Word has length 96 [2024-11-10 15:11:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:38,208 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 231 transitions. [2024-11-10 15:11:38,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.142857142857143) internal successors, (75), 31 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:11:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 231 transitions. [2024-11-10 15:11:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 15:11:38,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:38,209 INFO L215 NwaCegarLoop]: trace histogram [16, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:38,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 15:11:38,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:38,409 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 72 more)] === [2024-11-10 15:11:38,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 324988810, now seen corresponding path program 3 times [2024-11-10 15:11:38,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430668783] [2024-11-10 15:11:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:11:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 15:11:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-10 15:11:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 15:11:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-10 15:11:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-10 15:11:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 184 proven. 43 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-10 15:11:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430668783] [2024-11-10 15:11:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430668783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:11:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039523986] [2024-11-10 15:11:39,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:11:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:39,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:39,806 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:39,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 15:11:40,155 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 15:11:40,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:11:40,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 15:11:40,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:40,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:11:40,320 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 15 treesize of output 11 [2024-11-10 15:11:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 125 proven. 10 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-10 15:11:56,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:11:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 125 proven. 10 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-10 15:11:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039523986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:11:57,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:11:57,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 34 [2024-11-10 15:11:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126443956] [2024-11-10 15:11:57,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:11:57,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 15:11:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 15:11:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=987, Unknown=2, NotChecked=0, Total=1122 [2024-11-10 15:11:57,226 INFO L87 Difference]: Start difference. First operand 211 states and 231 transitions. Second operand has 34 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9)