./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:58:18,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:58:18,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:58:18,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:58:18,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:58:18,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:58:18,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:58:18,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:58:18,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:58:18,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:58:18,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:58:18,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:58:18,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:58:18,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:58:18,583 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:58:18,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:58:18,584 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:58:18,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:58:18,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:58:18,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:58:18,585 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:58:18,587 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:58:18,587 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:58:18,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:58:18,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:58:18,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:58:18,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:58:18,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:58:18,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:58:18,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:58:18,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:58:18,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:58:18,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:58:18,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:58:18,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:58:18,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:58:18,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:58:18,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:58:18,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:58:18,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:58:18,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:58:18,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:58:18,593 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 [2024-10-11 17:58:18,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:58:18,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:58:18,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:58:18,914 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:58:18,915 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:58:18,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2024-10-11 17:58:20,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:58:20,604 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:58:20,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2024-10-11 17:58:20,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/366be82c1/facb81da9df444d6b8e4cb86501efd1e/FLAGbf86eb929 [2024-10-11 17:58:20,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/366be82c1/facb81da9df444d6b8e4cb86501efd1e [2024-10-11 17:58:20,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:58:20,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:58:20,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:58:20,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:58:20,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:58:20,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:58:20" (1/1) ... [2024-10-11 17:58:20,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74939637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:20, skipping insertion in model container [2024-10-11 17:58:20,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:58:20" (1/1) ... [2024-10-11 17:58:20,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:58:21,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:58:21,108 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:58:21,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:58:21,202 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:58:21,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21 WrapperNode [2024-10-11 17:58:21,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:58:21,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:58:21,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:58:21,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:58:21,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,257 INFO L138 Inliner]: procedures = 188, calls = 73, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 246 [2024-10-11 17:58:21,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:58:21,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:58:21,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:58:21,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:58:21,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,308 INFO L175 MemorySlicer]: Split 39 memory accesses to 3 slices as follows [2, 11, 26]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-10-11 17:58:21,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:58:21,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:58:21,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:58:21,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:58:21,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (1/1) ... [2024-10-11 17:58:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:58:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:21,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:58:21,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:58:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 17:58:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:58:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 17:58:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 17:58:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 17:58:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 17:58:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 17:58:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 17:58:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-10-11 17:58:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-10-11 17:58:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:58:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 17:58:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 17:58:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 17:58:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2024-10-11 17:58:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2024-10-11 17:58:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 17:58:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 17:58:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 17:58:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:58:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:58:21,634 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:58:21,636 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:58:22,183 INFO L? ?]: Removed 203 outVars from TransFormulas that were not future-live. [2024-10-11 17:58:22,183 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:58:22,261 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:58:22,262 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 17:58:22,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:58:22 BoogieIcfgContainer [2024-10-11 17:58:22,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:58:22,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:58:22,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:58:22,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:58:22,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:58:20" (1/3) ... [2024-10-11 17:58:22,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c92ecdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:58:22, skipping insertion in model container [2024-10-11 17:58:22,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:58:21" (2/3) ... [2024-10-11 17:58:22,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c92ecdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:58:22, skipping insertion in model container [2024-10-11 17:58:22,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:58:22" (3/3) ... [2024-10-11 17:58:22,274 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2024-10-11 17:58:22,293 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:58:22,294 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2024-10-11 17:58:22,346 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:58:22,353 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;@1f9d2f42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:58:22,353 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-11 17:58:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 108 states have (on average 2.1203703703703702) internal successors, (229), 197 states have internal predecessors, (229), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:58:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 17:58:22,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:22,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 17:58:22,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:22,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 487602, now seen corresponding path program 1 times [2024-10-11 17:58:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083058104] [2024-10-11 17:58:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:58:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083058104] [2024-10-11 17:58:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083058104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:58:22,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557711549] [2024-10-11 17:58:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:22,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 17:58:22,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 17:58:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:58:22,548 INFO L87 Difference]: Start difference. First operand has 213 states, 108 states have (on average 2.1203703703703702) internal successors, (229), 197 states have internal predecessors, (229), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:22,688 INFO L93 Difference]: Finished difference Result 213 states and 244 transitions. [2024-10-11 17:58:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 17:58:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-11 17:58:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:22,711 INFO L225 Difference]: With dead ends: 213 [2024-10-11 17:58:22,711 INFO L226 Difference]: Without dead ends: 212 [2024-10-11 17:58:22,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:58:22,717 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:22,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:58:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-11 17:58:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-10-11 17:58:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 108 states have (on average 2.009259259259259) internal successors, (217), 196 states have internal predecessors, (217), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:58:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 243 transitions. [2024-10-11 17:58:22,779 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 243 transitions. Word has length 3 [2024-10-11 17:58:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:22,780 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 243 transitions. [2024-10-11 17:58:22,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 243 transitions. [2024-10-11 17:58:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 17:58:22,781 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:22,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 17:58:22,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:58:22,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:22,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash 464461737, now seen corresponding path program 1 times [2024-10-11 17:58:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325387548] [2024-10-11 17:58:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:58:22,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:22,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325387548] [2024-10-11 17:58:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325387548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:22,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:58:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599517824] [2024-10-11 17:58:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:22,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:58:22,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:58:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:58:22,923 INFO L87 Difference]: Start difference. First operand 212 states and 243 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:23,096 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2024-10-11 17:58:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:58:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 17:58:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:23,099 INFO L225 Difference]: With dead ends: 211 [2024-10-11 17:58:23,099 INFO L226 Difference]: Without dead ends: 211 [2024-10-11 17:58:23,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:58:23,100 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:23,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 369 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-11 17:58:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-10-11 17:58:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 108 states have (on average 2.0) internal successors, (216), 195 states have internal predecessors, (216), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:58:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2024-10-11 17:58:23,122 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 5 [2024-10-11 17:58:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:23,123 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2024-10-11 17:58:23,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2024-10-11 17:58:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:58:23,124 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:23,124 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:58:23,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:58:23,124 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:23,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1513412199, now seen corresponding path program 1 times [2024-10-11 17:58:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479824775] [2024-10-11 17:58:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326754770] [2024-10-11 17:58:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:23,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:23,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:23,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:23,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:58:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:23,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:58:23,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:23,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:58:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:58:23,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:58:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479824775] [2024-10-11 17:58:23,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326754770] [2024-10-11 17:58:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326754770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:58:23,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:58:23,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:58:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477243639] [2024-10-11 17:58:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:58:23,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:58:23,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:58:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:58:23,407 INFO L87 Difference]: Start difference. First operand 211 states and 242 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:23,614 INFO L93 Difference]: Finished difference Result 218 states and 249 transitions. [2024-10-11 17:58:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:58:23,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-11 17:58:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:23,616 INFO L225 Difference]: With dead ends: 218 [2024-10-11 17:58:23,617 INFO L226 Difference]: Without dead ends: 218 [2024-10-11 17:58:23,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:58:23,619 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 9 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:23,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 579 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-11 17:58:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-10-11 17:58:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 114 states have (on average 1.956140350877193) internal successors, (223), 201 states have internal predecessors, (223), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:58:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2024-10-11 17:58:23,643 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 6 [2024-10-11 17:58:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:23,643 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2024-10-11 17:58:23,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:58:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2024-10-11 17:58:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 17:58:23,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:23,646 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:23,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:58:23,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:23,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:23,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash 740659307, now seen corresponding path program 1 times [2024-10-11 17:58:23,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:23,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392617542] [2024-10-11 17:58:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:23,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:23,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992868038] [2024-10-11 17:58:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:23,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:23,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:23,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:58:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:24,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-11 17:58:24,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:24,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 17:58:24,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 17:58:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 17:58:24,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-11 17:58:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392617542] [2024-10-11 17:58:24,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992868038] [2024-10-11 17:58:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992868038] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:24,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2024-10-11 17:58:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757946011] [2024-10-11 17:58:24,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:24,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:58:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:58:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:58:24,635 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:58:24,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:24,954 INFO L93 Difference]: Finished difference Result 229 states and 260 transitions. [2024-10-11 17:58:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:58:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2024-10-11 17:58:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:24,956 INFO L225 Difference]: With dead ends: 229 [2024-10-11 17:58:24,956 INFO L226 Difference]: Without dead ends: 220 [2024-10-11 17:58:24,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-10-11 17:58:24,958 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:24,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1014 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:58:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-11 17:58:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-10-11 17:58:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 117 states have (on average 1.9230769230769231) internal successors, (225), 203 states have internal predecessors, (225), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:58:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 251 transitions. [2024-10-11 17:58:24,974 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 251 transitions. Word has length 55 [2024-10-11 17:58:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:24,975 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 251 transitions. [2024-10-11 17:58:24,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-11 17:58:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 251 transitions. [2024-10-11 17:58:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 17:58:24,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:24,977 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:24,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 17:58:25,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:25,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:25,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash 742387222, now seen corresponding path program 1 times [2024-10-11 17:58:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088514543] [2024-10-11 17:58:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:58:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:58:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:58:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:58:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:25,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:58:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:26,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 17:58:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 100 proven. 11 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-11 17:58:26,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:26,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088514543] [2024-10-11 17:58:26,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088514543] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:58:26,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444451803] [2024-10-11 17:58:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:26,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:26,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:26,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:26,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:58:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:26,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 17:58:26,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:26,419 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-10-11 17:58:26,459 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:58:26,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:58:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 110 trivial. 10 not checked. [2024-10-11 17:58:26,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:26,745 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 17:58:26,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-10-11 17:58:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 105 proven. 11 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-11 17:58:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444451803] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:26,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:58:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-11 17:58:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493138980] [2024-10-11 17:58:26,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:26,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:58:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:26,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:58:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2024-10-11 17:58:26,777 INFO L87 Difference]: Start difference. First operand 220 states and 251 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:58:27,923 INFO L93 Difference]: Finished difference Result 310 states and 362 transitions. [2024-10-11 17:58:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:58:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-10-11 17:58:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:58:27,927 INFO L225 Difference]: With dead ends: 310 [2024-10-11 17:58:27,927 INFO L226 Difference]: Without dead ends: 310 [2024-10-11 17:58:27,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=274, Unknown=1, NotChecked=34, Total=380 [2024-10-11 17:58:27,928 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 414 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 346 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:58:27,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 995 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1653 Invalid, 0 Unknown, 346 Unchecked, 1.0s Time] [2024-10-11 17:58:27,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-11 17:58:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 218. [2024-10-11 17:58:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 117 states have (on average 1.9059829059829059) internal successors, (223), 201 states have internal predecessors, (223), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:58:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2024-10-11 17:58:27,943 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 71 [2024-10-11 17:58:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:58:27,944 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2024-10-11 17:58:27,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2024-10-11 17:58:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 17:58:27,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:58:27,946 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:58:27,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:58:28,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:28,151 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:58:28,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:58:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 742387223, now seen corresponding path program 1 times [2024-10-11 17:58:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:58:28,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713899745] [2024-10-11 17:58:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:28,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:58:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:58:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029224355] [2024-10-11 17:58:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:58:28,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:58:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:58:28,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:58:28,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:58:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:58:28,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-11 17:58:28,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:58:28,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 17:58:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-11 17:58:37,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:58:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-10-11 17:58:38,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:58:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713899745] [2024-10-11 17:58:38,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:58:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029224355] [2024-10-11 17:58:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029224355] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:58:38,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:58:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6] total 22 [2024-10-11 17:58:38,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144805252] [2024-10-11 17:58:38,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:58:38,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 17:58:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:58:38,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 17:58:38,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=401, Unknown=2, NotChecked=0, Total=462 [2024-10-11 17:58:38,866 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:58:42,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:47,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:53,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:58:57,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:59:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:00,546 INFO L93 Difference]: Finished difference Result 319 states and 372 transitions. [2024-10-11 17:59:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 17:59:00,546 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-10-11 17:59:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:00,548 INFO L225 Difference]: With dead ends: 319 [2024-10-11 17:59:00,548 INFO L226 Difference]: Without dead ends: 313 [2024-10-11 17:59:00,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=221, Invalid=1109, Unknown=2, NotChecked=0, Total=1332 [2024-10-11 17:59:00,549 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 146 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 26 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:00,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 932 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2921 Invalid, 4 Unknown, 0 Unchecked, 19.3s Time] [2024-10-11 17:59:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-10-11 17:59:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 221. [2024-10-11 17:59:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 120 states have (on average 1.8833333333333333) internal successors, (226), 204 states have internal predecessors, (226), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:59:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 252 transitions. [2024-10-11 17:59:00,563 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 252 transitions. Word has length 71 [2024-10-11 17:59:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:00,564 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 252 transitions. [2024-10-11 17:59:00,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:59:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 252 transitions. [2024-10-11 17:59:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 17:59:00,568 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:00,569 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:00,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:59:00,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 17:59:00,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:00,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2060947669, now seen corresponding path program 2 times [2024-10-11 17:59:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078759897] [2024-10-11 17:59:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:59:00,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433667325] [2024-10-11 17:59:00,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:59:00,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:00,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:00,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:59:01,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:59:01,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:59:01,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-11 17:59:01,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:01,512 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| (select |c_#length| |zalloc_or_die_calloc_model_~ptr~0#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) 0))) is different from true [2024-10-11 17:59:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:59:01,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:59:01,577 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:59:01,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:59:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 20 not checked. [2024-10-11 17:59:01,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078759897] [2024-10-11 17:59:01,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:59:01,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433667325] [2024-10-11 17:59:01,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433667325] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:01,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:59:01,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-11 17:59:01,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243890836] [2024-10-11 17:59:01,715 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:01,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 17:59:01,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 17:59:01,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2024-10-11 17:59:01,717 INFO L87 Difference]: Start difference. First operand 221 states and 252 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 17:59:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:02,784 INFO L93 Difference]: Finished difference Result 311 states and 363 transitions. [2024-10-11 17:59:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:59:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-10-11 17:59:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:02,786 INFO L225 Difference]: With dead ends: 311 [2024-10-11 17:59:02,786 INFO L226 Difference]: Without dead ends: 311 [2024-10-11 17:59:02,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2024-10-11 17:59:02,787 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 118 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:02,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 410 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1454 Invalid, 0 Unknown, 343 Unchecked, 0.9s Time] [2024-10-11 17:59:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-11 17:59:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 219. [2024-10-11 17:59:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 120 states have (on average 1.8666666666666667) internal successors, (224), 202 states have internal predecessors, (224), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:59:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 250 transitions. [2024-10-11 17:59:02,797 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 250 transitions. Word has length 74 [2024-10-11 17:59:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:02,798 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 250 transitions. [2024-10-11 17:59:02,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 17:59:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 250 transitions. [2024-10-11 17:59:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 17:59:02,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:02,801 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:02,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:59:03,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:03,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:03,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -535125298, now seen corresponding path program 1 times [2024-10-11 17:59:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052712200] [2024-10-11 17:59:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:03,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 17:59:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 144 proven. 34 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-11 17:59:03,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:03,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052712200] [2024-10-11 17:59:03,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052712200] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:03,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004564515] [2024-10-11 17:59:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:03,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:03,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:03,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:03,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:59:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:04,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 17:59:04,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:04,223 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-10-11 17:59:04,279 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:59:04,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:59:04,317 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-10-11 17:59:04,348 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:59:04,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:59:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 53 not checked. [2024-10-11 17:59:04,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:04,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004564515] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:04,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:59:04,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2024-10-11 17:59:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809420559] [2024-10-11 17:59:04,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:04,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 17:59:04,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 17:59:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2024-10-11 17:59:04,567 INFO L87 Difference]: Start difference. First operand 219 states and 250 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:59:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:05,602 INFO L93 Difference]: Finished difference Result 308 states and 360 transitions. [2024-10-11 17:59:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:59:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-10-11 17:59:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:05,605 INFO L225 Difference]: With dead ends: 308 [2024-10-11 17:59:05,605 INFO L226 Difference]: Without dead ends: 308 [2024-10-11 17:59:05,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=385, Unknown=2, NotChecked=82, Total=552 [2024-10-11 17:59:05,606 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 223 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 681 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:05,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 915 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1798 Invalid, 0 Unknown, 681 Unchecked, 0.9s Time] [2024-10-11 17:59:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-11 17:59:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 216. [2024-10-11 17:59:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 120 states have (on average 1.8416666666666666) internal successors, (221), 199 states have internal predecessors, (221), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 17:59:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 247 transitions. [2024-10-11 17:59:05,614 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 247 transitions. Word has length 75 [2024-10-11 17:59:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:05,615 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 247 transitions. [2024-10-11 17:59:05,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 17:59:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 247 transitions. [2024-10-11 17:59:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 17:59:05,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:05,621 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:05,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 17:59:05,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 17:59:05,822 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:05,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash -535125297, now seen corresponding path program 1 times [2024-10-11 17:59:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:05,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371696584] [2024-10-11 17:59:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:06,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:06,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:06,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:06,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:06,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:06,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-11 17:59:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 136 proven. 23 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-11 17:59:07,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371696584] [2024-10-11 17:59:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371696584] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795929441] [2024-10-11 17:59:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:07,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:07,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:07,140 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:07,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:59:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:07,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-11 17:59:07,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:07,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 17:59:13,858 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-10-11 17:59:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:59:14,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:59:14,212 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:59:14,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:59:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 118 proven. 92 refuted. 0 times theorem prover too weak. 65 trivial. 5 not checked. [2024-10-11 17:59:14,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795929441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:14,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:59:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 34 [2024-10-11 17:59:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262850000] [2024-10-11 17:59:14,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:14,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 17:59:14,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:14,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 17:59:14,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1083, Unknown=2, NotChecked=66, Total=1260 [2024-10-11 17:59:14,465 INFO L87 Difference]: Start difference. First operand 216 states and 247 transitions. Second operand has 34 states, 32 states have (on average 1.875) internal successors, (60), 28 states have internal predecessors, (60), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:59:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:18,056 INFO L93 Difference]: Finished difference Result 324 states and 389 transitions. [2024-10-11 17:59:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 17:59:18,056 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.875) internal successors, (60), 28 states have internal predecessors, (60), 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 75 [2024-10-11 17:59:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:18,058 INFO L225 Difference]: With dead ends: 324 [2024-10-11 17:59:18,058 INFO L226 Difference]: Without dead ends: 321 [2024-10-11 17:59:18,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=218, Invalid=1764, Unknown=2, NotChecked=86, Total=2070 [2024-10-11 17:59:18,059 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 431 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:18,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 857 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3371 Invalid, 0 Unknown, 369 Unchecked, 2.8s Time] [2024-10-11 17:59:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-11 17:59:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 220. [2024-10-11 17:59:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 123 states have (on average 1.829268292682927) internal successors, (225), 203 states have internal predecessors, (225), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-10-11 17:59:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 255 transitions. [2024-10-11 17:59:18,070 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 255 transitions. Word has length 75 [2024-10-11 17:59:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:18,071 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 255 transitions. [2024-10-11 17:59:18,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.875) internal successors, (60), 28 states have internal predecessors, (60), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:59:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 255 transitions. [2024-10-11 17:59:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 17:59:18,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:18,072 INFO L215 NwaCegarLoop]: trace histogram [15, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:18,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 17:59:18,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:18,273 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:18,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:18,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1662987497, now seen corresponding path program 2 times [2024-10-11 17:59:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:18,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312232627] [2024-10-11 17:59:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:18,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-11 17:59:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 148 proven. 31 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-11 17:59:19,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:19,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312232627] [2024-10-11 17:59:19,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312232627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:19,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339816001] [2024-10-11 17:59:19,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:59:19,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:19,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:19,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:19,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:59:20,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:59:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:59:20,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-11 17:59:20,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:59:20,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-11 17:59:37,522 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-10-11 17:59:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:59:37,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:59:37,804 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:59:37,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:59:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 132 proven. 87 refuted. 0 times theorem prover too weak. 76 trivial. 5 not checked. [2024-10-11 17:59:37,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:59:38,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339816001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:38,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:59:38,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 37 [2024-10-11 17:59:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097498318] [2024-10-11 17:59:38,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:59:38,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-11 17:59:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:59:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-11 17:59:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=4, NotChecked=72, Total=1482 [2024-10-11 17:59:38,145 INFO L87 Difference]: Start difference. First operand 220 states and 255 transitions. Second operand has 37 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:59:42,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-11 17:59:45,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:59:45,971 INFO L93 Difference]: Finished difference Result 319 states and 380 transitions. [2024-10-11 17:59:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 17:59:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 31 states have internal predecessors, (62), 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 76 [2024-10-11 17:59:45,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:59:45,973 INFO L225 Difference]: With dead ends: 319 [2024-10-11 17:59:45,973 INFO L226 Difference]: Without dead ends: 316 [2024-10-11 17:59:45,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=246, Invalid=2106, Unknown=4, NotChecked=94, Total=2450 [2024-10-11 17:59:45,975 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 323 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-10-11 17:59:45,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1176 Invalid, 4492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4110 Invalid, 1 Unknown, 364 Unchecked, 6.8s Time] [2024-10-11 17:59:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-10-11 17:59:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 221. [2024-10-11 17:59:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 204 states have internal predecessors, (227), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-10-11 17:59:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 257 transitions. [2024-10-11 17:59:45,983 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 257 transitions. Word has length 76 [2024-10-11 17:59:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:59:45,984 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 257 transitions. [2024-10-11 17:59:45,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 31 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 17:59:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 257 transitions. [2024-10-11 17:59:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 17:59:45,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:59:45,985 INFO L215 NwaCegarLoop]: trace histogram [16, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:59:46,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 17:59:46,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 17:59:46,190 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 17:59:46,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:59:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1085007375, now seen corresponding path program 3 times [2024-10-11 17:59:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:59:46,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073233055] [2024-10-11 17:59:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:59:46,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:59:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:46,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:59:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:46,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 17:59:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:46,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-11 17:59:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:46,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 17:59:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:47,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 17:59:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:47,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 17:59:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:59:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 160 proven. 40 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-11 17:59:47,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:59:47,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073233055] [2024-10-11 17:59:47,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073233055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:59:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13034976] [2024-10-11 17:59:47,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 17:59:47,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:59:47,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:59:47,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:59:47,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process