./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 a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 10:41:36,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 10:41:37,083 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 10:41:37,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 10:41:37,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 10:41:37,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 10:41:37,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 10:41:37,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 10:41:37,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 10:41:37,116 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 10:41:37,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 10:41:37,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 10:41:37,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 10:41:37,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 10:41:37,119 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 10:41:37,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 10:41:37,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 10:41:37,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 10:41:37,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 10:41:37,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 10:41:37,121 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 10:41:37,124 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 10:41:37,125 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 10:41:37,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 10:41:37,125 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 10:41:37,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 10:41:37,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 10:41:37,126 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 10:41:37,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 10:41:37,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 10:41:37,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 10:41:37,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 10:41:37,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 10:41:37,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:41:37,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 10:41:37,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 10:41:37,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 10:41:37,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 10:41:37,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 10:41:37,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 10:41:37,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 10:41:37,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 10:41:37,129 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 [2024-10-13 10:41:37,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 10:41:37,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 10:41:37,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 10:41:37,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 10:41:37,423 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 10:41:37,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2024-10-13 10:41:38,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 10:41:39,121 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 10:41:39,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2024-10-13 10:41:39,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c801f74be/54c1ed7b94c94d12b60d50c58bb22200/FLAGf324699fd [2024-10-13 10:41:39,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c801f74be/54c1ed7b94c94d12b60d50c58bb22200 [2024-10-13 10:41:39,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 10:41:39,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 10:41:39,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 10:41:39,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 10:41:39,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 10:41:39,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:41:39" (1/1) ... [2024-10-13 10:41:39,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc4ecf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:39, skipping insertion in model container [2024-10-13 10:41:39,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:41:39" (1/1) ... [2024-10-13 10:41:39,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 10:41:39,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:41:39,969 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 10:41:40,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:41:40,085 INFO L204 MainTranslator]: Completed translation [2024-10-13 10:41:40,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40 WrapperNode [2024-10-13 10:41:40,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 10:41:40,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 10:41:40,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 10:41:40,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 10:41:40,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,153 INFO L138 Inliner]: procedures = 188, calls = 73, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 246 [2024-10-13 10:41:40,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 10:41:40,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 10:41:40,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 10:41:40,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 10:41:40,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,208 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]. [2024-10-13 10:41:40,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 10:41:40,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 10:41:40,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 10:41:40,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 10:41:40,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (1/1) ... [2024-10-13 10:41:40,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:41:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:41:40,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 10:41:40,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 10:41:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 10:41:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 10:41:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 10:41:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 10:41:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 10:41:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 10:41:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 10:41:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 10:41:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-10-13 10:41:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-10-13 10:41:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2024-10-13 10:41:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 10:41:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 10:41:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 10:41:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 10:41:40,510 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 10:41:40,513 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 10:41:41,063 INFO L? ?]: Removed 203 outVars from TransFormulas that were not future-live. [2024-10-13 10:41:41,064 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 10:41:41,148 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 10:41:41,148 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-13 10:41:41,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:41:41 BoogieIcfgContainer [2024-10-13 10:41:41,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 10:41:41,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 10:41:41,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 10:41:41,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 10:41:41,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:41:39" (1/3) ... [2024-10-13 10:41:41,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e0365a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:41:41, skipping insertion in model container [2024-10-13 10:41:41,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:41:40" (2/3) ... [2024-10-13 10:41:41,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e0365a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:41:41, skipping insertion in model container [2024-10-13 10:41:41,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:41:41" (3/3) ... [2024-10-13 10:41:41,162 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2024-10-13 10:41:41,184 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 10:41:41,185 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2024-10-13 10:41:41,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:41:41,235 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;@266cd0ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:41:41,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-13 10:41:41,242 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) [2024-10-13 10:41:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-13 10:41:41,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:41:41,253 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-13 10:41:41,253 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)] === [2024-10-13 10:41:41,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:41:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash 487602, now seen corresponding path program 1 times [2024-10-13 10:41:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:41:41,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247866107] [2024-10-13 10:41:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:41:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:41:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:41:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247866107] [2024-10-13 10:41:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247866107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:41:41,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:41:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:41:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187906544] [2024-10-13 10:41:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:41:41,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:41:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:41:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:41:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:41:41,442 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) [2024-10-13 10:41:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:41:41,533 INFO L93 Difference]: Finished difference Result 213 states and 244 transitions. [2024-10-13 10:41:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:41:41,536 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 [2024-10-13 10:41:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:41:41,544 INFO L225 Difference]: With dead ends: 213 [2024-10-13 10:41:41,544 INFO L226 Difference]: Without dead ends: 212 [2024-10-13 10:41:41,547 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 [2024-10-13 10:41:41,550 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 [2024-10-13 10:41:41,551 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] [2024-10-13 10:41:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-13 10:41:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-10-13 10:41:41,589 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) [2024-10-13 10:41:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 243 transitions. [2024-10-13 10:41:41,594 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 243 transitions. Word has length 3 [2024-10-13 10:41:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:41:41,595 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 243 transitions. [2024-10-13 10:41:41,595 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) [2024-10-13 10:41:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 243 transitions. [2024-10-13 10:41:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-13 10:41:41,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:41:41,595 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 10:41:41,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 10:41:41,596 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)] === [2024-10-13 10:41:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:41:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 464461737, now seen corresponding path program 1 times [2024-10-13 10:41:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:41:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754031106] [2024-10-13 10:41:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:41:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:41:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:41:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754031106] [2024-10-13 10:41:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754031106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:41:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:41:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:41:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377384293] [2024-10-13 10:41:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:41:41,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:41:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:41:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:41:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:41:41,719 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) [2024-10-13 10:41:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:41:41,896 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2024-10-13 10:41:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:41:41,897 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 [2024-10-13 10:41:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:41:41,898 INFO L225 Difference]: With dead ends: 211 [2024-10-13 10:41:41,900 INFO L226 Difference]: Without dead ends: 211 [2024-10-13 10:41:41,901 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 [2024-10-13 10:41:41,902 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 [2024-10-13 10:41:41,904 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] [2024-10-13 10:41:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-13 10:41:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-10-13 10:41:41,923 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) [2024-10-13 10:41:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2024-10-13 10:41:41,929 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 5 [2024-10-13 10:41:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:41:41,929 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2024-10-13 10:41:41,929 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) [2024-10-13 10:41:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2024-10-13 10:41:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-13 10:41:41,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:41:41,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 10:41:41,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 10:41:41,930 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)] === [2024-10-13 10:41:41,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:41:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1513412199, now seen corresponding path program 1 times [2024-10-13 10:41:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:41:41,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181262832] [2024-10-13 10:41:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:41:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 10:41:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803299382] [2024-10-13 10:41:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:41,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:41:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:41:41,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:41:41,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 10:41:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:42,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 10:41:42,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:41:42,179 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 [2024-10-13 10:41:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:41:42,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:41:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:41:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181262832] [2024-10-13 10:41:42,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 10:41:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803299382] [2024-10-13 10:41:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803299382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:41:42,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:41:42,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:41:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433338213] [2024-10-13 10:41:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:41:42,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:41:42,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:41:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:41:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:41:42,217 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) [2024-10-13 10:41:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:41:42,405 INFO L93 Difference]: Finished difference Result 218 states and 249 transitions. [2024-10-13 10:41:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:41:42,405 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 [2024-10-13 10:41:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:41:42,407 INFO L225 Difference]: With dead ends: 218 [2024-10-13 10:41:42,407 INFO L226 Difference]: Without dead ends: 218 [2024-10-13 10:41:42,408 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 [2024-10-13 10:41:42,410 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 [2024-10-13 10:41:42,411 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] [2024-10-13 10:41:42,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-13 10:41:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-10-13 10:41:42,434 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) [2024-10-13 10:41:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2024-10-13 10:41:42,436 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 6 [2024-10-13 10:41:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:41:42,439 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2024-10-13 10:41:42,439 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) [2024-10-13 10:41:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2024-10-13 10:41:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-13 10:41:42,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:41:42,441 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] [2024-10-13 10:41:42,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 10:41:42,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:41:42,642 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)] === [2024-10-13 10:41:42,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:41:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 740659307, now seen corresponding path program 1 times [2024-10-13 10:41:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:41:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271809045] [2024-10-13 10:41:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:41:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 10:41:42,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037434075] [2024-10-13 10:41:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:41:42,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:41:42,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:41:42,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 10:41:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:42,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-13 10:41:42,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:41:42,991 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 [2024-10-13 10:41:43,028 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 [2024-10-13 10:41:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 10:41:43,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:41:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-13 10:41:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:41:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271809045] [2024-10-13 10:41:43,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 10:41:43,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037434075] [2024-10-13 10:41:43,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037434075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:41:43,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 10:41:43,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2024-10-13 10:41:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830844167] [2024-10-13 10:41:43,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 10:41:43,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:41:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:41:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:41:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:41:43,401 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) [2024-10-13 10:41:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:41:43,702 INFO L93 Difference]: Finished difference Result 229 states and 260 transitions. [2024-10-13 10:41:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 10:41:43,703 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 [2024-10-13 10:41:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:41:43,704 INFO L225 Difference]: With dead ends: 229 [2024-10-13 10:41:43,705 INFO L226 Difference]: Without dead ends: 220 [2024-10-13 10:41:43,706 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 [2024-10-13 10:41:43,709 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 [2024-10-13 10:41:43,710 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] [2024-10-13 10:41:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-13 10:41:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-10-13 10:41:43,724 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) [2024-10-13 10:41:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 251 transitions. [2024-10-13 10:41:43,727 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 251 transitions. Word has length 55 [2024-10-13 10:41:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:41:43,727 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 251 transitions. [2024-10-13 10:41:43,727 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) [2024-10-13 10:41:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 251 transitions. [2024-10-13 10:41:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-13 10:41:43,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:41:43,731 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] [2024-10-13 10:41:43,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 10:41:43,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-13 10:41:43,936 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)] === [2024-10-13 10:41:43,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:41:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash 742387222, now seen corresponding path program 1 times [2024-10-13 10:41:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:41:43,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926500445] [2024-10-13 10:41:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:43,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:41:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 10:41:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 10:41:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 10:41:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 10:41:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-13 10:41:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 10:41:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 100 proven. 11 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-13 10:41:44,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:41:44,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926500445] [2024-10-13 10:41:44,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926500445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:41:44,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86692858] [2024-10-13 10:41:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:44,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:41:44,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:41:44,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:41:44,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 10:41:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:45,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 10:41:45,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:41:45,193 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 [2024-10-13 10:41:45,244 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-13 10:41:45,245 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 [2024-10-13 10:41:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 110 trivial. 10 not checked. [2024-10-13 10:41:45,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:41:45,490 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 10:41:45,491 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 [2024-10-13 10:41:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 105 proven. 11 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-13 10:41:45,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86692858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:41:45,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:41:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-13 10:41:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450475992] [2024-10-13 10:41:45,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:41:45,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 10:41:45,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:41:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 10:41:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2024-10-13 10:41:45,526 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) [2024-10-13 10:41:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:41:46,676 INFO L93 Difference]: Finished difference Result 310 states and 362 transitions. [2024-10-13 10:41:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 10:41:46,676 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 [2024-10-13 10:41:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:41:46,679 INFO L225 Difference]: With dead ends: 310 [2024-10-13 10:41:46,680 INFO L226 Difference]: Without dead ends: 310 [2024-10-13 10:41:46,680 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 [2024-10-13 10:41:46,681 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 [2024-10-13 10:41:46,681 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] [2024-10-13 10:41:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-10-13 10:41:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 218. [2024-10-13 10:41:46,691 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) [2024-10-13 10:41:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2024-10-13 10:41:46,693 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 71 [2024-10-13 10:41:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:41:46,693 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2024-10-13 10:41:46,694 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) [2024-10-13 10:41:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2024-10-13 10:41:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-13 10:41:46,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:41:46,696 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] [2024-10-13 10:41:46,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 10:41:46,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:41:46,897 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)] === [2024-10-13 10:41:46,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:41:46,898 INFO L85 PathProgramCache]: Analyzing trace with hash 742387223, now seen corresponding path program 1 times [2024-10-13 10:41:46,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:41:46,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430997401] [2024-10-13 10:41:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:46,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:41:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 10:41:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583574838] [2024-10-13 10:41:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:41:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:41:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:41:47,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:41:47,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 10:41:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:41:47,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-13 10:41:47,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:41:47,482 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 [2024-10-13 10:41:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-13 10:41:52,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:41:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-10-13 10:41:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:41:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430997401] [2024-10-13 10:41:53,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 10:41:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583574838] [2024-10-13 10:41:53,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583574838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:41:53,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 10:41:53,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6] total 22 [2024-10-13 10:41:53,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623641884] [2024-10-13 10:41:53,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 10:41:53,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 10:41:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:41:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 10:41:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=402, Unknown=1, NotChecked=0, Total=462 [2024-10-13 10:41:53,500 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) [2024-10-13 10:41:57,553 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] [2024-10-13 10:42:03,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-13 10:42:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:42:06,841 INFO L93 Difference]: Finished difference Result 319 states and 372 transitions. [2024-10-13 10:42:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 10:42:06,842 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 [2024-10-13 10:42:06,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:42:06,843 INFO L225 Difference]: With dead ends: 319 [2024-10-13 10:42:06,843 INFO L226 Difference]: Without dead ends: 313 [2024-10-13 10:42:06,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=221, Invalid=1110, Unknown=1, NotChecked=0, Total=1332 [2024-10-13 10:42:06,845 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 146 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:42:06,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 932 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2922 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2024-10-13 10:42:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-10-13 10:42:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 221. [2024-10-13 10:42:06,852 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) [2024-10-13 10:42:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 252 transitions. [2024-10-13 10:42:06,854 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 252 transitions. Word has length 71 [2024-10-13 10:42:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:42:06,854 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 252 transitions. [2024-10-13 10:42:06,854 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) [2024-10-13 10:42:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 252 transitions. [2024-10-13 10:42:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-13 10:42:06,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:42:06,858 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] [2024-10-13 10:42:06,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 10:42:07,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:07,059 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)] === [2024-10-13 10:42:07,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:42:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2060947669, now seen corresponding path program 2 times [2024-10-13 10:42:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:42:07,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120577851] [2024-10-13 10:42:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:42:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:42:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 10:42:07,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756583489] [2024-10-13 10:42:07,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 10:42:07,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:42:07,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:42:07,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 10:42:07,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 10:42:07,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:42:07,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-13 10:42:07,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:42:07,758 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 [2024-10-13 10:42:07,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:42:07,808 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 [2024-10-13 10:42:07,815 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 10:42:07,815 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 [2024-10-13 10:42:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 20 not checked. [2024-10-13 10:42:07,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:42:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:42:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120577851] [2024-10-13 10:42:07,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 10:42:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756583489] [2024-10-13 10:42:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756583489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:07,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:42:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-13 10:42:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701065300] [2024-10-13 10:42:07,924 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 10:42:07,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 10:42:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:42:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 10:42:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2024-10-13 10:42:07,926 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) [2024-10-13 10:42:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:42:08,868 INFO L93 Difference]: Finished difference Result 311 states and 363 transitions. [2024-10-13 10:42:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 10:42:08,869 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 [2024-10-13 10:42:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:42:08,871 INFO L225 Difference]: With dead ends: 311 [2024-10-13 10:42:08,871 INFO L226 Difference]: Without dead ends: 311 [2024-10-13 10:42:08,871 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 [2024-10-13 10:42:08,871 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 118 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 10:42:08,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 410 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1454 Invalid, 0 Unknown, 343 Unchecked, 0.8s Time] [2024-10-13 10:42:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-10-13 10:42:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 219. [2024-10-13 10:42:08,878 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) [2024-10-13 10:42:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 250 transitions. [2024-10-13 10:42:08,880 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 250 transitions. Word has length 74 [2024-10-13 10:42:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:42:08,880 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 250 transitions. [2024-10-13 10:42:08,880 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) [2024-10-13 10:42:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 250 transitions. [2024-10-13 10:42:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-13 10:42:08,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:42:08,882 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] [2024-10-13 10:42:08,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 10:42:09,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:09,087 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)] === [2024-10-13 10:42:09,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:42:09,088 INFO L85 PathProgramCache]: Analyzing trace with hash -535125298, now seen corresponding path program 1 times [2024-10-13 10:42:09,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:42:09,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299689652] [2024-10-13 10:42:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:42:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:42:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 10:42:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 10:42:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 10:42:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 10:42:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-13 10:42:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 10:42:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 144 proven. 34 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-13 10:42:09,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:42:09,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299689652] [2024-10-13 10:42:09,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299689652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105489315] [2024-10-13 10:42:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:42:09,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:09,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:42:09,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:42:09,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 10:42:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:10,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 10:42:10,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:42:10,325 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 [2024-10-13 10:42:10,373 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-13 10:42:10,374 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 [2024-10-13 10:42:10,403 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 [2024-10-13 10:42:10,430 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-13 10:42:10,431 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 [2024-10-13 10:42:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 152 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 53 not checked. [2024-10-13 10:42:10,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:42:10,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105489315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:10,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 10:42:10,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2024-10-13 10:42:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27794538] [2024-10-13 10:42:10,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 10:42:10,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 10:42:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:42:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 10:42:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2024-10-13 10:42:10,638 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) [2024-10-13 10:42:11,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:42:11,499 INFO L93 Difference]: Finished difference Result 308 states and 360 transitions. [2024-10-13 10:42:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:42:11,500 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 [2024-10-13 10:42:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:42:11,501 INFO L225 Difference]: With dead ends: 308 [2024-10-13 10:42:11,501 INFO L226 Difference]: Without dead ends: 308 [2024-10-13 10:42:11,502 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 [2024-10-13 10:42:11,502 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 223 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 10:42:11,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 915 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1798 Invalid, 0 Unknown, 681 Unchecked, 0.8s Time] [2024-10-13 10:42:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-13 10:42:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 216. [2024-10-13 10:42:11,511 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) [2024-10-13 10:42:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 247 transitions. [2024-10-13 10:42:11,512 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 247 transitions. Word has length 75 [2024-10-13 10:42:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:42:11,513 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 247 transitions. [2024-10-13 10:42:11,513 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) [2024-10-13 10:42:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 247 transitions. [2024-10-13 10:42:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-13 10:42:11,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:42:11,518 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] [2024-10-13 10:42:11,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 10:42:11,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:11,719 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)] === [2024-10-13 10:42:11,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:42:11,719 INFO L85 PathProgramCache]: Analyzing trace with hash -535125297, now seen corresponding path program 1 times [2024-10-13 10:42:11,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:42:11,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744155248] [2024-10-13 10:42:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:42:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:42:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:12,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 10:42:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:12,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 10:42:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:12,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 10:42:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:12,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 10:42:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:12,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-13 10:42:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:13,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 10:42:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 136 proven. 23 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-13 10:42:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:42:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744155248] [2024-10-13 10:42:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744155248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406733129] [2024-10-13 10:42:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:42:13,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:42:13,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:42:13,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 10:42:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:13,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-13 10:42:13,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:42:14,013 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 [2024-10-13 10:42:26,988 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 [2024-10-13 10:42:27,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:42:27,338 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 [2024-10-13 10:42:27,346 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 10:42:27,346 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 [2024-10-13 10:42:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 118 proven. 92 refuted. 0 times theorem prover too weak. 65 trivial. 5 not checked. [2024-10-13 10:42:27,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:42:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406733129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:27,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 10:42:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 34 [2024-10-13 10:42:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201583697] [2024-10-13 10:42:27,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 10:42:27,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 10:42:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:42:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 10:42:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=4, NotChecked=66, Total=1260 [2024-10-13 10:42:27,559 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) [2024-10-13 10:42:31,590 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] [2024-10-13 10:42:39,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-13 10:42:45,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-10-13 10:42:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:42:49,628 INFO L93 Difference]: Finished difference Result 326 states and 393 transitions. [2024-10-13 10:42:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 10:42:49,628 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 [2024-10-13 10:42:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:42:49,630 INFO L225 Difference]: With dead ends: 326 [2024-10-13 10:42:49,630 INFO L226 Difference]: Without dead ends: 323 [2024-10-13 10:42:49,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=215, Invalid=1763, Unknown=6, NotChecked=86, Total=2070 [2024-10-13 10:42:49,631 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 431 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 3771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2024-10-13 10:42:49,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 857 Invalid, 3771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3371 Invalid, 3 Unknown, 371 Unchecked, 14.2s Time] [2024-10-13 10:42:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-10-13 10:42:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 220. [2024-10-13 10:42:49,640 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) [2024-10-13 10:42:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 255 transitions. [2024-10-13 10:42:49,642 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 255 transitions. Word has length 75 [2024-10-13 10:42:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:42:49,642 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 255 transitions. [2024-10-13 10:42:49,642 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) [2024-10-13 10:42:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 255 transitions. [2024-10-13 10:42:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-13 10:42:49,644 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:42:49,644 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] [2024-10-13 10:42:49,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 10:42:49,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:49,847 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)] === [2024-10-13 10:42:49,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:42:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1662987497, now seen corresponding path program 2 times [2024-10-13 10:42:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:42:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071127781] [2024-10-13 10:42:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:42:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:42:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:50,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 10:42:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:50,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 10:42:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:50,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 10:42:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:50,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 10:42:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:50,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-13 10:42:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:51,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-13 10:42:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:42:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 148 proven. 31 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-13 10:42:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:42:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071127781] [2024-10-13 10:42:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071127781] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382695050] [2024-10-13 10:42:51,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 10:42:51,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:42:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:42:51,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:42:51,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 10:42:51,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 10:42:51,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 10:42:51,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-13 10:42:51,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:42:52,058 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 [2024-10-13 10:42:57,112 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 [2024-10-13 10:42:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 10:42:57,394 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 [2024-10-13 10:42:57,402 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 10:42:57,402 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 [2024-10-13 10:42:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 132 proven. 87 refuted. 0 times theorem prover too weak. 76 trivial. 5 not checked. [2024-10-13 10:42:57,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:42:57,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382695050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:42:57,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 10:42:57,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 37 [2024-10-13 10:42:57,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014315678] [2024-10-13 10:42:57,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 10:42:57,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-13 10:42:57,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:42:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-13 10:42:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1269, Unknown=2, NotChecked=72, Total=1482 [2024-10-13 10:42:57,631 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) [2024-10-13 10:43:01,670 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] [2024-10-13 10:43:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:43:05,456 INFO L93 Difference]: Finished difference Result 319 states and 380 transitions. [2024-10-13 10:43:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 10:43:05,456 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 [2024-10-13 10:43:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:43:05,458 INFO L225 Difference]: With dead ends: 319 [2024-10-13 10:43:05,458 INFO L226 Difference]: Without dead ends: 316 [2024-10-13 10:43:05,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=246, Invalid=2108, Unknown=2, NotChecked=94, Total=2450 [2024-10-13 10:43:05,459 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 220 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 4636 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 5010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-10-13 10:43:05,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1378 Invalid, 5010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4636 Invalid, 1 Unknown, 364 Unchecked, 6.7s Time] [2024-10-13 10:43:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-10-13 10:43:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 221. [2024-10-13 10:43:05,472 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) [2024-10-13 10:43:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 257 transitions. [2024-10-13 10:43:05,473 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 257 transitions. Word has length 76 [2024-10-13 10:43:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:43:05,474 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 257 transitions. [2024-10-13 10:43:05,474 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) [2024-10-13 10:43:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 257 transitions. [2024-10-13 10:43:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-13 10:43:05,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:43:05,475 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] [2024-10-13 10:43:05,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 10:43:05,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 10:43:05,676 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)] === [2024-10-13 10:43:05,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:43:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1085007375, now seen corresponding path program 3 times [2024-10-13 10:43:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:43:05,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80611082] [2024-10-13 10:43:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:43:05,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:43:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:43:06,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 10:43:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:43:06,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-13 10:43:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:43:06,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-13 10:43:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:43:06,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 10:43:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:43:06,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-13 10:43:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:43:06,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-13 10:43:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat