./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 20:58:04,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 20:58:04,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 20:58:04,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 20:58:04,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 20:58:04,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 20:58:04,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 20:58:04,168 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 20:58:04,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 20:58:04,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 20:58:04,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 20:58:04,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 20:58:04,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 20:58:04,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 20:58:04,170 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 20:58:04,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 20:58:04,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 20:58:04,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 20:58:04,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 20:58:04,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 20:58:04,173 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 20:58:04,174 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 20:58:04,174 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 20:58:04,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 20:58:04,175 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 20:58:04,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 20:58:04,175 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 20:58:04,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 20:58:04,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 20:58:04,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 20:58:04,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 20:58:04,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 20:58:04,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 20:58:04,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 20:58:04,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 20:58:04,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 20:58:04,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 20:58:04,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 20:58:04,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 20:58:04,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 20:58:04,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 20:58:04,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 20:58:04,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2024-11-22 20:58:04,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 20:58:04,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 20:58:04,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 20:58:04,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 20:58:04,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 20:58:04,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2024-11-22 20:58:05,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 20:58:05,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 20:58:05,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2024-11-22 20:58:05,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c7d3d8e4/39c4c77ec3cc4663b677f4c3f6e6bebc/FLAGe9e43b4ed [2024-11-22 20:58:06,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c7d3d8e4/39c4c77ec3cc4663b677f4c3f6e6bebc [2024-11-22 20:58:06,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 20:58:06,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 20:58:06,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 20:58:06,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 20:58:06,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 20:58:06,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57180563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06, skipping insertion in model container [2024-11-22 20:58:06,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 20:58:06,510 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 20:58:06,545 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 20:58:06,551 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 20:58:06,554 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 20:58:06,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 20:58:06,579 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 20:58:06,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 20:58:06,589 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 20:58:06,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 20:58:06,720 INFO L204 MainTranslator]: Completed translation [2024-11-22 20:58:06,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06 WrapperNode [2024-11-22 20:58:06,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 20:58:06,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 20:58:06,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 20:58:06,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 20:58:06,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,792 INFO L138 Inliner]: procedures = 176, calls = 170, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 805 [2024-11-22 20:58:06,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 20:58:06,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 20:58:06,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 20:58:06,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 20:58:06,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,845 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2024-11-22 20:58:06,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 20:58:06,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 20:58:06,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 20:58:06,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 20:58:06,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (1/1) ... [2024-11-22 20:58:06,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 20:58:06,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:06,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 20:58:06,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 20:58:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 20:58:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 20:58:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 20:58:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 20:58:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-22 20:58:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-22 20:58:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-22 20:58:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 20:58:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 20:58:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 20:58:07,115 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 20:58:07,117 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 20:58:07,120 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-22 20:58:07,155 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-22 20:58:08,280 INFO L? ?]: Removed 762 outVars from TransFormulas that were not future-live. [2024-11-22 20:58:08,281 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 20:58:08,304 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 20:58:08,305 INFO L316 CfgBuilder]: Removed 31 assume(true) statements. [2024-11-22 20:58:08,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:58:08 BoogieIcfgContainer [2024-11-22 20:58:08,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 20:58:08,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 20:58:08,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 20:58:08,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 20:58:08,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:58:06" (1/3) ... [2024-11-22 20:58:08,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633d408b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:58:08, skipping insertion in model container [2024-11-22 20:58:08,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:06" (2/3) ... [2024-11-22 20:58:08,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633d408b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:58:08, skipping insertion in model container [2024-11-22 20:58:08,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:58:08" (3/3) ... [2024-11-22 20:58:08,311 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-1.i [2024-11-22 20:58:08,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 20:58:08,326 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 320 error locations. [2024-11-22 20:58:08,404 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 20:58:08,409 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;@7e403cb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 20:58:08,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 320 error locations. [2024-11-22 20:58:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 737 states, 415 states have (on average 2.0626506024096387) internal successors, (856), 732 states have internal predecessors, (856), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-22 20:58:08,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:08,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 20:58:08,419 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:08,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash 45876316, now seen corresponding path program 1 times [2024-11-22 20:58:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527076883] [2024-11-22 20:58:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:08,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527076883] [2024-11-22 20:58:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527076883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 20:58:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089868385] [2024-11-22 20:58:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:08,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 20:58:08,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 20:58:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:08,616 INFO L87 Difference]: Start difference. First operand has 737 states, 415 states have (on average 2.0626506024096387) internal successors, (856), 732 states have internal predecessors, (856), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:09,125 INFO L93 Difference]: Finished difference Result 680 states and 769 transitions. [2024-11-22 20:58:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 20:58:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-22 20:58:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:09,136 INFO L225 Difference]: With dead ends: 680 [2024-11-22 20:58:09,136 INFO L226 Difference]: Without dead ends: 678 [2024-11-22 20:58:09,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:09,140 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 678 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:09,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 469 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 20:58:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-22 20:58:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 676. [2024-11-22 20:58:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 409 states have (on average 1.8533007334963325) internal successors, (758), 671 states have internal predecessors, (758), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 764 transitions. [2024-11-22 20:58:09,190 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 764 transitions. Word has length 5 [2024-11-22 20:58:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:09,190 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 764 transitions. [2024-11-22 20:58:09,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 764 transitions. [2024-11-22 20:58:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-22 20:58:09,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:09,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 20:58:09,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 20:58:09,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:09,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 45876317, now seen corresponding path program 1 times [2024-11-22 20:58:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:09,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843115950] [2024-11-22 20:58:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:09,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843115950] [2024-11-22 20:58:09,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843115950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:09,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:09,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 20:58:09,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336018601] [2024-11-22 20:58:09,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:09,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 20:58:09,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 20:58:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:09,272 INFO L87 Difference]: Start difference. First operand 676 states and 764 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:09,649 INFO L93 Difference]: Finished difference Result 753 states and 847 transitions. [2024-11-22 20:58:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 20:58:09,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-22 20:58:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:09,652 INFO L225 Difference]: With dead ends: 753 [2024-11-22 20:58:09,652 INFO L226 Difference]: Without dead ends: 753 [2024-11-22 20:58:09,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:09,653 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 416 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:09,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 828 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-22 20:58:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 705. [2024-11-22 20:58:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 449 states have (on average 1.8396436525612472) internal successors, (826), 700 states have internal predecessors, (826), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 832 transitions. [2024-11-22 20:58:09,675 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 832 transitions. Word has length 5 [2024-11-22 20:58:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:09,675 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 832 transitions. [2024-11-22 20:58:09,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 832 transitions. [2024-11-22 20:58:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 20:58:09,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:09,676 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 20:58:09,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 20:58:09,676 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:09,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1423342697, now seen corresponding path program 1 times [2024-11-22 20:58:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156881623] [2024-11-22 20:58:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:09,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156881623] [2024-11-22 20:58:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156881623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:09,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 20:58:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076632377] [2024-11-22 20:58:09,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:09,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 20:58:09,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 20:58:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:09,712 INFO L87 Difference]: Start difference. First operand 705 states and 832 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:09,734 INFO L93 Difference]: Finished difference Result 1386 states and 1639 transitions. [2024-11-22 20:58:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 20:58:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-22 20:58:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:09,738 INFO L225 Difference]: With dead ends: 1386 [2024-11-22 20:58:09,739 INFO L226 Difference]: Without dead ends: 1386 [2024-11-22 20:58:09,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:09,741 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 721 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:09,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 20:58:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-22 20:58:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 706. [2024-11-22 20:58:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 450 states have (on average 1.8377777777777777) internal successors, (827), 701 states have internal predecessors, (827), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 833 transitions. [2024-11-22 20:58:09,772 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 833 transitions. Word has length 6 [2024-11-22 20:58:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:09,773 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 833 transitions. [2024-11-22 20:58:09,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 833 transitions. [2024-11-22 20:58:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 20:58:09,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:09,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:09,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 20:58:09,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:09,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1612480742, now seen corresponding path program 1 times [2024-11-22 20:58:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198827849] [2024-11-22 20:58:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:09,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:09,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198827849] [2024-11-22 20:58:09,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198827849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:09,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:09,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 20:58:09,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917910410] [2024-11-22 20:58:09,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:09,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 20:58:09,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:09,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 20:58:09,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 20:58:09,847 INFO L87 Difference]: Start difference. First operand 706 states and 833 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:10,263 INFO L93 Difference]: Finished difference Result 732 states and 886 transitions. [2024-11-22 20:58:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 20:58:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-22 20:58:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:10,266 INFO L225 Difference]: With dead ends: 732 [2024-11-22 20:58:10,266 INFO L226 Difference]: Without dead ends: 732 [2024-11-22 20:58:10,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 20:58:10,267 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 942 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:10,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 730 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-22 20:58:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 683. [2024-11-22 20:58:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 450 states have (on average 1.7866666666666666) internal successors, (804), 678 states have internal predecessors, (804), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 810 transitions. [2024-11-22 20:58:10,284 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 810 transitions. Word has length 15 [2024-11-22 20:58:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:10,284 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 810 transitions. [2024-11-22 20:58:10,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 810 transitions. [2024-11-22 20:58:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 20:58:10,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:10,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:10,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 20:58:10,285 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:10,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:10,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1612480743, now seen corresponding path program 1 times [2024-11-22 20:58:10,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:10,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582728706] [2024-11-22 20:58:10,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:10,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582728706] [2024-11-22 20:58:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582728706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 20:58:10,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71579821] [2024-11-22 20:58:10,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:10,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 20:58:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 20:58:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:10,362 INFO L87 Difference]: Start difference. First operand 683 states and 810 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:10,383 INFO L93 Difference]: Finished difference Result 608 states and 707 transitions. [2024-11-22 20:58:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 20:58:10,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2024-11-22 20:58:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:10,385 INFO L225 Difference]: With dead ends: 608 [2024-11-22 20:58:10,385 INFO L226 Difference]: Without dead ends: 608 [2024-11-22 20:58:10,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:10,386 INFO L432 NwaCegarLoop]: 615 mSDtfsCounter, 61 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:10,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1177 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 20:58:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-22 20:58:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2024-11-22 20:58:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 387 states have (on average 1.8113695090439277) internal successors, (701), 603 states have internal predecessors, (701), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 707 transitions. [2024-11-22 20:58:10,396 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 707 transitions. Word has length 15 [2024-11-22 20:58:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:10,397 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 707 transitions. [2024-11-22 20:58:10,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 707 transitions. [2024-11-22 20:58:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 20:58:10,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:10,398 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:10,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 20:58:10,398 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:10,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash -889043613, now seen corresponding path program 1 times [2024-11-22 20:58:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:10,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943807074] [2024-11-22 20:58:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:10,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:10,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943807074] [2024-11-22 20:58:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943807074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:10,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 20:58:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613117134] [2024-11-22 20:58:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:10,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 20:58:10,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 20:58:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 20:58:10,445 INFO L87 Difference]: Start difference. First operand 608 states and 707 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:10,483 INFO L93 Difference]: Finished difference Result 590 states and 682 transitions. [2024-11-22 20:58:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 20:58:10,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-22 20:58:10,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:10,485 INFO L225 Difference]: With dead ends: 590 [2024-11-22 20:58:10,485 INFO L226 Difference]: Without dead ends: 590 [2024-11-22 20:58:10,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 20:58:10,486 INFO L432 NwaCegarLoop]: 580 mSDtfsCounter, 41 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:10,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1712 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 20:58:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-22 20:58:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 587. [2024-11-22 20:58:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 373 states have (on average 1.804289544235925) internal successors, (673), 582 states have internal predecessors, (673), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 679 transitions. [2024-11-22 20:58:10,493 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 679 transitions. Word has length 17 [2024-11-22 20:58:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:10,493 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 679 transitions. [2024-11-22 20:58:10,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 679 transitions. [2024-11-22 20:58:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 20:58:10,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:10,494 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:10,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 20:58:10,494 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:10,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:10,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1279459759, now seen corresponding path program 1 times [2024-11-22 20:58:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269017787] [2024-11-22 20:58:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:10,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:10,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:10,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269017787] [2024-11-22 20:58:10,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269017787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:10,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:10,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 20:58:10,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375303537] [2024-11-22 20:58:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:10,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 20:58:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:10,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 20:58:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 20:58:10,598 INFO L87 Difference]: Start difference. First operand 587 states and 679 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:10,988 INFO L93 Difference]: Finished difference Result 680 states and 766 transitions. [2024-11-22 20:58:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 20:58:10,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2024-11-22 20:58:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:10,991 INFO L225 Difference]: With dead ends: 680 [2024-11-22 20:58:10,991 INFO L226 Difference]: Without dead ends: 680 [2024-11-22 20:58:10,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 20:58:10,993 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 417 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:10,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1011 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-22 20:58:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 583. [2024-11-22 20:58:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 373 states have (on average 1.7935656836461127) internal successors, (669), 578 states have internal predecessors, (669), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 675 transitions. [2024-11-22 20:58:11,004 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 675 transitions. Word has length 31 [2024-11-22 20:58:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:11,005 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 675 transitions. [2024-11-22 20:58:11,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 675 transitions. [2024-11-22 20:58:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 20:58:11,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:11,007 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:11,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 20:58:11,007 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:11,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1848554501, now seen corresponding path program 1 times [2024-11-22 20:58:11,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:11,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315659194] [2024-11-22 20:58:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:11,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315659194] [2024-11-22 20:58:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315659194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:11,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:11,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 20:58:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390551686] [2024-11-22 20:58:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:11,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 20:58:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 20:58:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 20:58:11,080 INFO L87 Difference]: Start difference. First operand 583 states and 675 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:11,111 INFO L93 Difference]: Finished difference Result 583 states and 671 transitions. [2024-11-22 20:58:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 20:58:11,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2024-11-22 20:58:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:11,113 INFO L225 Difference]: With dead ends: 583 [2024-11-22 20:58:11,113 INFO L226 Difference]: Without dead ends: 583 [2024-11-22 20:58:11,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 20:58:11,113 INFO L432 NwaCegarLoop]: 575 mSDtfsCounter, 21 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:11,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1694 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 20:58:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-22 20:58:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2024-11-22 20:58:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 373 states have (on average 1.7828418230563003) internal successors, (665), 578 states have internal predecessors, (665), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 671 transitions. [2024-11-22 20:58:11,120 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 671 transitions. Word has length 65 [2024-11-22 20:58:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:11,121 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 671 transitions. [2024-11-22 20:58:11,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 671 transitions. [2024-11-22 20:58:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 20:58:11,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:11,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:11,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 20:58:11,122 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:11,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -516543407, now seen corresponding path program 1 times [2024-11-22 20:58:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759872628] [2024-11-22 20:58:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:11,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:11,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759872628] [2024-11-22 20:58:11,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759872628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:11,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:11,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 20:58:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479665586] [2024-11-22 20:58:11,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:11,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 20:58:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 20:58:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:11,219 INFO L87 Difference]: Start difference. First operand 583 states and 671 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:11,249 INFO L93 Difference]: Finished difference Result 679 states and 794 transitions. [2024-11-22 20:58:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 20:58:11,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2024-11-22 20:58:11,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:11,252 INFO L225 Difference]: With dead ends: 679 [2024-11-22 20:58:11,252 INFO L226 Difference]: Without dead ends: 679 [2024-11-22 20:58:11,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 20:58:11,253 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 54 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:11,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1152 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 20:58:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-22 20:58:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-11-22 20:58:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 469 states have (on average 1.6801705756929637) internal successors, (788), 674 states have internal predecessors, (788), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 794 transitions. [2024-11-22 20:58:11,261 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 794 transitions. Word has length 73 [2024-11-22 20:58:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:11,261 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 794 transitions. [2024-11-22 20:58:11,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 794 transitions. [2024-11-22 20:58:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 20:58:11,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:11,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:11,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 20:58:11,262 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:11,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 416038488, now seen corresponding path program 1 times [2024-11-22 20:58:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520086547] [2024-11-22 20:58:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:11,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520086547] [2024-11-22 20:58:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520086547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:11,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:11,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 20:58:11,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379694989] [2024-11-22 20:58:11,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:11,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 20:58:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 20:58:11,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 20:58:11,653 INFO L87 Difference]: Start difference. First operand 679 states and 794 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:12,231 INFO L93 Difference]: Finished difference Result 641 states and 756 transitions. [2024-11-22 20:58:12,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 20:58:12,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 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 76 [2024-11-22 20:58:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:12,234 INFO L225 Difference]: With dead ends: 641 [2024-11-22 20:58:12,234 INFO L226 Difference]: Without dead ends: 641 [2024-11-22 20:58:12,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 20:58:12,235 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 472 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:12,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 683 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 20:58:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-22 20:58:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 601. [2024-11-22 20:58:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 429 states have (on average 1.564102564102564) internal successors, (671), 596 states have internal predecessors, (671), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 677 transitions. [2024-11-22 20:58:12,244 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 677 transitions. Word has length 76 [2024-11-22 20:58:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:12,244 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 677 transitions. [2024-11-22 20:58:12,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 677 transitions. [2024-11-22 20:58:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-22 20:58:12,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:12,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:12,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 20:58:12,246 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:12,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash 157004196, now seen corresponding path program 1 times [2024-11-22 20:58:12,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146008810] [2024-11-22 20:58:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:12,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146008810] [2024-11-22 20:58:12,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146008810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:12,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:12,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 20:58:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133492154] [2024-11-22 20:58:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:12,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 20:58:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 20:58:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 20:58:12,430 INFO L87 Difference]: Start difference. First operand 601 states and 677 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:12,861 INFO L93 Difference]: Finished difference Result 600 states and 676 transitions. [2024-11-22 20:58:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 20:58:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2024-11-22 20:58:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:12,863 INFO L225 Difference]: With dead ends: 600 [2024-11-22 20:58:12,863 INFO L226 Difference]: Without dead ends: 600 [2024-11-22 20:58:12,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 20:58:12,864 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 2 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:12,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1506 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-22 20:58:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2024-11-22 20:58:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 429 states have (on average 1.5617715617715617) internal successors, (670), 595 states have internal predecessors, (670), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 676 transitions. [2024-11-22 20:58:12,872 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 676 transitions. Word has length 81 [2024-11-22 20:58:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:12,872 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 676 transitions. [2024-11-22 20:58:12,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 676 transitions. [2024-11-22 20:58:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-22 20:58:12,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:12,873 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:12,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 20:58:12,873 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:12,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 157004197, now seen corresponding path program 1 times [2024-11-22 20:58:12,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:12,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510158979] [2024-11-22 20:58:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510158979] [2024-11-22 20:58:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510158979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:13,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:13,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 20:58:13,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299650918] [2024-11-22 20:58:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:13,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 20:58:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 20:58:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 20:58:13,172 INFO L87 Difference]: Start difference. First operand 600 states and 676 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:13,584 INFO L93 Difference]: Finished difference Result 599 states and 675 transitions. [2024-11-22 20:58:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 20:58:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2024-11-22 20:58:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:13,586 INFO L225 Difference]: With dead ends: 599 [2024-11-22 20:58:13,586 INFO L226 Difference]: Without dead ends: 599 [2024-11-22 20:58:13,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 20:58:13,587 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 1 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:13,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1515 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-22 20:58:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2024-11-22 20:58:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 428 states have (on average 1.5630841121495327) internal successors, (669), 594 states have internal predecessors, (669), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 675 transitions. [2024-11-22 20:58:13,595 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 675 transitions. Word has length 81 [2024-11-22 20:58:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:13,595 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 675 transitions. [2024-11-22 20:58:13,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 20:58:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 675 transitions. [2024-11-22 20:58:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-22 20:58:13,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:13,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:13,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 20:58:13,599 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:13,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash 896889099, now seen corresponding path program 1 times [2024-11-22 20:58:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:13,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808804157] [2024-11-22 20:58:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:13,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:13,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808804157] [2024-11-22 20:58:13,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808804157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:13,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:13,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 20:58:13,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73322054] [2024-11-22 20:58:13,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:13,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 20:58:13,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 20:58:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 20:58:13,800 INFO L87 Difference]: Start difference. First operand 599 states and 675 transitions. Second operand has 7 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:14,207 INFO L93 Difference]: Finished difference Result 611 states and 690 transitions. [2024-11-22 20:58:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 20:58:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-11-22 20:58:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:14,210 INFO L225 Difference]: With dead ends: 611 [2024-11-22 20:58:14,210 INFO L226 Difference]: Without dead ends: 611 [2024-11-22 20:58:14,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-22 20:58:14,211 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 6 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:14,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2041 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-22 20:58:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 605. [2024-11-22 20:58:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 433 states have (on average 1.5612009237875288) internal successors, (676), 599 states have internal predecessors, (676), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 20:58:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 685 transitions. [2024-11-22 20:58:14,219 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 685 transitions. Word has length 89 [2024-11-22 20:58:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:14,219 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 685 transitions. [2024-11-22 20:58:14,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 685 transitions. [2024-11-22 20:58:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-22 20:58:14,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:14,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:14,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 20:58:14,221 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:14,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 896889100, now seen corresponding path program 1 times [2024-11-22 20:58:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141623618] [2024-11-22 20:58:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:14,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:14,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141623618] [2024-11-22 20:58:14,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141623618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:14,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:14,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 20:58:14,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844580767] [2024-11-22 20:58:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:14,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 20:58:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 20:58:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 20:58:14,633 INFO L87 Difference]: Start difference. First operand 605 states and 685 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:15,104 INFO L93 Difference]: Finished difference Result 605 states and 684 transitions. [2024-11-22 20:58:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 20:58:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-11-22 20:58:15,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:15,106 INFO L225 Difference]: With dead ends: 605 [2024-11-22 20:58:15,106 INFO L226 Difference]: Without dead ends: 605 [2024-11-22 20:58:15,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 20:58:15,107 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 1 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:15,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1950 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 20:58:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-22 20:58:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-22 20:58:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 433 states have (on average 1.5588914549653579) internal successors, (675), 599 states have internal predecessors, (675), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 20:58:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 684 transitions. [2024-11-22 20:58:15,117 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 684 transitions. Word has length 89 [2024-11-22 20:58:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:15,117 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 684 transitions. [2024-11-22 20:58:15,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 684 transitions. [2024-11-22 20:58:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 20:58:15,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:15,118 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:15,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 20:58:15,119 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:15,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash -962114482, now seen corresponding path program 1 times [2024-11-22 20:58:15,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:15,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854737004] [2024-11-22 20:58:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:15,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854737004] [2024-11-22 20:58:15,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854737004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119310188] [2024-11-22 20:58:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:15,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:15,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:15,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:15,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 20:58:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:15,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 20:58:15,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:15,745 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:15,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:15,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:15,813 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:15,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:15,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:15,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:15,882 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-22 20:58:15,883 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 21 treesize of output 20 [2024-11-22 20:58:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119310188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:15,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2024-11-22 20:58:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956471649] [2024-11-22 20:58:15,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:15,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 20:58:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 20:58:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=169, Unknown=6, NotChecked=0, Total=210 [2024-11-22 20:58:15,915 INFO L87 Difference]: Start difference. First operand 605 states and 684 transitions. Second operand has 14 states, 12 states have (on average 8.583333333333334) internal successors, (103), 13 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:58:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:16,898 INFO L93 Difference]: Finished difference Result 604 states and 683 transitions. [2024-11-22 20:58:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 20:58:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.583333333333334) internal successors, (103), 13 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2024-11-22 20:58:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:16,900 INFO L225 Difference]: With dead ends: 604 [2024-11-22 20:58:16,900 INFO L226 Difference]: Without dead ends: 604 [2024-11-22 20:58:16,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=372, Unknown=6, NotChecked=0, Total=462 [2024-11-22 20:58:16,901 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 479 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:16,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 2799 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 20:58:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-22 20:58:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-22 20:58:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 433 states have (on average 1.556581986143187) internal successors, (674), 598 states have internal predecessors, (674), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 20:58:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 683 transitions. [2024-11-22 20:58:16,908 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 683 transitions. Word has length 90 [2024-11-22 20:58:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:16,908 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 683 transitions. [2024-11-22 20:58:16,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.583333333333334) internal successors, (103), 13 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:58:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 683 transitions. [2024-11-22 20:58:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 20:58:16,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:16,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:16,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 20:58:17,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 20:58:17,110 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:17,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash -962114481, now seen corresponding path program 1 times [2024-11-22 20:58:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363245042] [2024-11-22 20:58:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363245042] [2024-11-22 20:58:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363245042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931205534] [2024-11-22 20:58:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:17,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:17,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:17,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:17,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 20:58:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:17,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 20:58:17,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:17,801 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:17,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:17,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 20:58:17,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2024-11-22 20:58:17,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:17,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2024-11-22 20:58:17,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:18,004 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:18,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:18,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:18,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:18,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:18,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:18,120 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_628 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_628) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_627 (Array Int Int)) (v_ArrVal_628 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_628) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-22 20:58:18,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931205534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:18,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:18,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2024-11-22 20:58:18,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147405671] [2024-11-22 20:58:18,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:18,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 20:58:18,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 20:58:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=324, Unknown=1, NotChecked=36, Total=420 [2024-11-22 20:58:18,123 INFO L87 Difference]: Start difference. First operand 604 states and 683 transitions. Second operand has 18 states, 15 states have (on average 7.666666666666667) internal successors, (115), 18 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:19,428 INFO L93 Difference]: Finished difference Result 611 states and 690 transitions. [2024-11-22 20:58:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 20:58:19,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 7.666666666666667) internal successors, (115), 18 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 90 [2024-11-22 20:58:19,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:19,430 INFO L225 Difference]: With dead ends: 611 [2024-11-22 20:58:19,430 INFO L226 Difference]: Without dead ends: 611 [2024-11-22 20:58:19,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=463, Unknown=1, NotChecked=44, Total=600 [2024-11-22 20:58:19,431 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 494 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:19,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 2819 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 20:58:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-22 20:58:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 602. [2024-11-22 20:58:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 432 states have (on average 1.5555555555555556) internal successors, (672), 596 states have internal predecessors, (672), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 678 transitions. [2024-11-22 20:58:19,438 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 678 transitions. Word has length 90 [2024-11-22 20:58:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:19,438 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 678 transitions. [2024-11-22 20:58:19,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 7.666666666666667) internal successors, (115), 18 states have internal predecessors, (115), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 678 transitions. [2024-11-22 20:58:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-22 20:58:19,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:19,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:19,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 20:58:19,643 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,SelfDestructingSolverStorable15 [2024-11-22 20:58:19,644 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:19,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 232210623, now seen corresponding path program 1 times [2024-11-22 20:58:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:19,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499354283] [2024-11-22 20:58:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:19,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:19,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499354283] [2024-11-22 20:58:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499354283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:19,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:19,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 20:58:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846058360] [2024-11-22 20:58:19,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:19,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 20:58:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 20:58:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-22 20:58:19,998 INFO L87 Difference]: Start difference. First operand 602 states and 678 transitions. Second operand has 14 states, 12 states have (on average 7.5) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:20,825 INFO L93 Difference]: Finished difference Result 615 states and 694 transitions. [2024-11-22 20:58:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 20:58:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.5) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2024-11-22 20:58:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:20,828 INFO L225 Difference]: With dead ends: 615 [2024-11-22 20:58:20,828 INFO L226 Difference]: Without dead ends: 615 [2024-11-22 20:58:20,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-22 20:58:20,828 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 499 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:20,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 3074 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 20:58:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-22 20:58:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 611. [2024-11-22 20:58:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 440 states have (on average 1.55) internal successors, (682), 604 states have internal predecessors, (682), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 689 transitions. [2024-11-22 20:58:20,836 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 689 transitions. Word has length 92 [2024-11-22 20:58:20,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:20,836 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 689 transitions. [2024-11-22 20:58:20,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.5) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 689 transitions. [2024-11-22 20:58:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-22 20:58:20,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:20,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:20,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 20:58:20,837 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:20,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 232210624, now seen corresponding path program 1 times [2024-11-22 20:58:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713670266] [2024-11-22 20:58:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713670266] [2024-11-22 20:58:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713670266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 20:58:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736903050] [2024-11-22 20:58:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:21,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 20:58:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 20:58:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 20:58:21,280 INFO L87 Difference]: Start difference. First operand 611 states and 689 transitions. Second operand has 11 states, 10 states have (on average 9.0) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:22,212 INFO L93 Difference]: Finished difference Result 614 states and 693 transitions. [2024-11-22 20:58:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 20:58:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.0) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2024-11-22 20:58:22,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:22,216 INFO L225 Difference]: With dead ends: 614 [2024-11-22 20:58:22,216 INFO L226 Difference]: Without dead ends: 614 [2024-11-22 20:58:22,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-22 20:58:22,217 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 477 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:22,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 2393 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 20:58:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-22 20:58:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2024-11-22 20:58:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 440 states have (on average 1.5477272727272726) internal successors, (681), 604 states have internal predecessors, (681), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 688 transitions. [2024-11-22 20:58:22,223 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 688 transitions. Word has length 92 [2024-11-22 20:58:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:22,224 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 688 transitions. [2024-11-22 20:58:22,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.0) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 688 transitions. [2024-11-22 20:58:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 20:58:22,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:22,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:22,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 20:58:22,225 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:22,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2035156324, now seen corresponding path program 1 times [2024-11-22 20:58:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:22,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117197544] [2024-11-22 20:58:22,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117197544] [2024-11-22 20:58:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117197544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713574647] [2024-11-22 20:58:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:22,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:22,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:22,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:22,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 20:58:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:22,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 20:58:22,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:22,850 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:22,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:22,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:22,922 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:22,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:22,972 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:22,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:22,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:22,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:22,992 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_876 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_876) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 20:58:22,997 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_876 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_876) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-22 20:58:23,033 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-22 20:58:23,034 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 33 treesize of output 32 [2024-11-22 20:58:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713574647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:23,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2024-11-22 20:58:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842546552] [2024-11-22 20:58:23,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:23,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 20:58:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 20:58:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=255, Unknown=6, NotChecked=66, Total=380 [2024-11-22 20:58:23,067 INFO L87 Difference]: Start difference. First operand 611 states and 688 transitions. Second operand has 17 states, 15 states have (on average 7.6) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:58:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:23,967 INFO L93 Difference]: Finished difference Result 613 states and 692 transitions. [2024-11-22 20:58:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 20:58:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.6) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 93 [2024-11-22 20:58:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:23,969 INFO L225 Difference]: With dead ends: 613 [2024-11-22 20:58:23,969 INFO L226 Difference]: Without dead ends: 613 [2024-11-22 20:58:23,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=497, Unknown=6, NotChecked=94, Total=702 [2024-11-22 20:58:23,970 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 475 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:23,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 3396 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 20:58:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-22 20:58:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 610. [2024-11-22 20:58:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 440 states have (on average 1.5454545454545454) internal successors, (680), 603 states have internal predecessors, (680), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 687 transitions. [2024-11-22 20:58:23,976 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 687 transitions. Word has length 93 [2024-11-22 20:58:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:23,977 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 687 transitions. [2024-11-22 20:58:23,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.6) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:58:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 687 transitions. [2024-11-22 20:58:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 20:58:23,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:23,978 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:23,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 20:58:24,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:24,182 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:24,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2035156323, now seen corresponding path program 1 times [2024-11-22 20:58:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:24,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61914927] [2024-11-22 20:58:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61914927] [2024-11-22 20:58:24,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61914927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:24,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121949757] [2024-11-22 20:58:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:24,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:24,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:24,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:24,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 20:58:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:24,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-22 20:58:24,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:24,911 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:24,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:24,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:24,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2024-11-22 20:58:25,066 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:25,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:25,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:25,131 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:25,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:25,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:25,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:25,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:25,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:25,223 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1014 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1014 (Array Int Int)) (v_ArrVal_1013 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-22 20:58:25,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 20:58:25,331 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 84 treesize of output 88 [2024-11-22 20:58:25,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121949757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:25,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:25,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2024-11-22 20:58:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77138391] [2024-11-22 20:58:25,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:25,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 20:58:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 20:58:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=514, Unknown=6, NotChecked=46, Total=650 [2024-11-22 20:58:25,409 INFO L87 Difference]: Start difference. First operand 610 states and 687 transitions. Second operand has 21 states, 18 states have (on average 6.722222222222222) internal successors, (121), 21 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:26,689 INFO L93 Difference]: Finished difference Result 612 states and 691 transitions. [2024-11-22 20:58:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 20:58:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.722222222222222) internal successors, (121), 21 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2024-11-22 20:58:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:26,691 INFO L225 Difference]: With dead ends: 612 [2024-11-22 20:58:26,691 INFO L226 Difference]: Without dead ends: 612 [2024-11-22 20:58:26,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=732, Unknown=6, NotChecked=56, Total=930 [2024-11-22 20:58:26,692 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 471 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 3381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:26,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 3176 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3381 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 20:58:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-22 20:58:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 600. [2024-11-22 20:58:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 432 states have (on average 1.5509259259259258) internal successors, (670), 594 states have internal predecessors, (670), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 676 transitions. [2024-11-22 20:58:26,698 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 676 transitions. Word has length 93 [2024-11-22 20:58:26,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:26,699 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 676 transitions. [2024-11-22 20:58:26,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.722222222222222) internal successors, (121), 21 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 676 transitions. [2024-11-22 20:58:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 20:58:26,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:26,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:26,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 20:58:26,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:26,903 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:26,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1405026382, now seen corresponding path program 1 times [2024-11-22 20:58:26,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:26,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312073268] [2024-11-22 20:58:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312073268] [2024-11-22 20:58:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312073268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:27,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 20:58:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275470355] [2024-11-22 20:58:27,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:27,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 20:58:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 20:58:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 20:58:27,344 INFO L87 Difference]: Start difference. First operand 600 states and 676 transitions. Second operand has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 14 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:28,086 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2024-11-22 20:58:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 20:58:28,087 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 14 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2024-11-22 20:58:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:28,089 INFO L225 Difference]: With dead ends: 616 [2024-11-22 20:58:28,089 INFO L226 Difference]: Without dead ends: 616 [2024-11-22 20:58:28,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-22 20:58:28,089 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 482 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:28,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 2483 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 20:58:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-22 20:58:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 612. [2024-11-22 20:58:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 443 states have (on average 1.5417607223476297) internal successors, (683), 605 states have internal predecessors, (683), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 690 transitions. [2024-11-22 20:58:28,096 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 690 transitions. Word has length 95 [2024-11-22 20:58:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:28,096 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 690 transitions. [2024-11-22 20:58:28,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 14 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 690 transitions. [2024-11-22 20:58:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 20:58:28,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:28,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:28,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 20:58:28,097 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:28,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1405026381, now seen corresponding path program 1 times [2024-11-22 20:58:28,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:28,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833677840] [2024-11-22 20:58:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833677840] [2024-11-22 20:58:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833677840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 20:58:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374685523] [2024-11-22 20:58:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:28,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 20:58:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 20:58:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 20:58:28,605 INFO L87 Difference]: Start difference. First operand 612 states and 690 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:29,360 INFO L93 Difference]: Finished difference Result 615 states and 694 transitions. [2024-11-22 20:58:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 20:58:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2024-11-22 20:58:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:29,363 INFO L225 Difference]: With dead ends: 615 [2024-11-22 20:58:29,363 INFO L226 Difference]: Without dead ends: 615 [2024-11-22 20:58:29,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-22 20:58:29,363 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 497 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:29,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1925 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 20:58:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-22 20:58:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 612. [2024-11-22 20:58:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 443 states have (on average 1.5395033860045146) internal successors, (682), 605 states have internal predecessors, (682), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 689 transitions. [2024-11-22 20:58:29,372 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 689 transitions. Word has length 95 [2024-11-22 20:58:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:29,372 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 689 transitions. [2024-11-22 20:58:29,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 689 transitions. [2024-11-22 20:58:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 20:58:29,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:29,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:29,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 20:58:29,373 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:29,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1583080267, now seen corresponding path program 1 times [2024-11-22 20:58:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:29,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376071600] [2024-11-22 20:58:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:29,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376071600] [2024-11-22 20:58:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376071600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556334375] [2024-11-22 20:58:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:29,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:29,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:29,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:29,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 20:58:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:29,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 20:58:29,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:29,993 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:29,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:29,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:30,038 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:30,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:30,071 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:30,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:30,113 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:30,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:30,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:30,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:30,136 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1293 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1293) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 20:58:30,173 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1293 (Array Int Int)) (v_ArrVal_1292 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1292))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1293)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 20:58:30,178 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1293 (Array Int Int)) (v_ArrVal_1292 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1292))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1293)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 20:58:30,207 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2024-11-22 20:58:30,207 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 57 treesize of output 56 [2024-11-22 20:58:30,219 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1296 (Array Int Int)) (v_ArrVal_1293 (Array Int Int)) (v_ArrVal_1292 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem51#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1296))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1292)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1293)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-22 20:58:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556334375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:30,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:30,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 17 [2024-11-22 20:58:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45613716] [2024-11-22 20:58:30,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:30,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 20:58:30,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 20:58:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=283, Unknown=9, NotChecked=148, Total=506 [2024-11-22 20:58:30,222 INFO L87 Difference]: Start difference. First operand 612 states and 689 transitions. Second operand has 18 states, 16 states have (on average 7.0625) internal successors, (113), 17 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:31,250 INFO L93 Difference]: Finished difference Result 614 states and 693 transitions. [2024-11-22 20:58:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 20:58:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 17 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-22 20:58:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:31,253 INFO L225 Difference]: With dead ends: 614 [2024-11-22 20:58:31,253 INFO L226 Difference]: Without dead ends: 614 [2024-11-22 20:58:31,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=578, Unknown=9, NotChecked=212, Total=930 [2024-11-22 20:58:31,254 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 489 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:31,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 3669 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 20:58:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-22 20:58:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2024-11-22 20:58:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 443 states have (on average 1.5372460496613995) internal successors, (681), 604 states have internal predecessors, (681), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 688 transitions. [2024-11-22 20:58:31,264 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 688 transitions. Word has length 96 [2024-11-22 20:58:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:31,264 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 688 transitions. [2024-11-22 20:58:31,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 17 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 688 transitions. [2024-11-22 20:58:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 20:58:31,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:31,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:31,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 20:58:31,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 20:58:31,466 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:31,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1583080266, now seen corresponding path program 1 times [2024-11-22 20:58:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:31,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418757832] [2024-11-22 20:58:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:32,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:32,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418757832] [2024-11-22 20:58:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418757832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:32,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329006023] [2024-11-22 20:58:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:32,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:32,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:32,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 20:58:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:32,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 20:58:32,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:32,220 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:32,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:32,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:32,300 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:32,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-22 20:58:32,338 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-22 20:58:32,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 41 [2024-11-22 20:58:32,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:32,452 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-22 20:58:32,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 66 [2024-11-22 20:58:32,467 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 7 treesize of output 3 [2024-11-22 20:58:32,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 51 treesize of output 32 [2024-11-22 20:58:32,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 21 [2024-11-22 20:58:32,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 34 treesize of output 16 [2024-11-22 20:58:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:32,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:32,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 20:58:32,681 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 112 treesize of output 116 [2024-11-22 20:58:32,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1162 treesize of output 1102 [2024-11-22 20:58:32,861 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 666 treesize of output 658 [2024-11-22 20:58:32,867 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 658 treesize of output 650 [2024-11-22 20:58:32,873 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 650 treesize of output 646 [2024-11-22 20:58:32,877 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 646 treesize of output 638 [2024-11-22 20:58:32,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 630 [2024-11-22 20:58:32,903 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 630 treesize of output 622 [2024-11-22 20:58:32,908 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 622 treesize of output 614 [2024-11-22 20:58:32,997 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1447 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1447) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8)) |c_ULTIMATE.start_main_~user~0#1.base|))) is different from false [2024-11-22 20:58:32,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329006023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:32,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2024-11-22 20:58:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350178001] [2024-11-22 20:58:32,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:32,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 20:58:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 20:58:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=699, Unknown=15, NotChecked=54, Total=870 [2024-11-22 20:58:33,000 INFO L87 Difference]: Start difference. First operand 611 states and 688 transitions. Second operand has 24 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 24 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:34,387 INFO L93 Difference]: Finished difference Result 613 states and 692 transitions. [2024-11-22 20:58:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 20:58:34,387 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 24 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 96 [2024-11-22 20:58:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:34,389 INFO L225 Difference]: With dead ends: 613 [2024-11-22 20:58:34,389 INFO L226 Difference]: Without dead ends: 613 [2024-11-22 20:58:34,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=1067, Unknown=15, NotChecked=68, Total=1332 [2024-11-22 20:58:34,389 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 492 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 2950 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:34,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 3008 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2950 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 20:58:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-22 20:58:34,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 598. [2024-11-22 20:58:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 432 states have (on average 1.5462962962962963) internal successors, (668), 592 states have internal predecessors, (668), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 674 transitions. [2024-11-22 20:58:34,395 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 674 transitions. Word has length 96 [2024-11-22 20:58:34,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:34,395 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 674 transitions. [2024-11-22 20:58:34,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 24 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 674 transitions. [2024-11-22 20:58:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 20:58:34,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:34,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:34,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 20:58:34,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:34,597 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:34,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1610945286, now seen corresponding path program 1 times [2024-11-22 20:58:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:34,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314771614] [2024-11-22 20:58:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:34,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314771614] [2024-11-22 20:58:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314771614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 20:58:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859102887] [2024-11-22 20:58:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:35,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 20:58:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 20:58:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-22 20:58:35,027 INFO L87 Difference]: Start difference. First operand 598 states and 674 transitions. Second operand has 16 states, 14 states have (on average 6.857142857142857) internal successors, (96), 15 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:35,903 INFO L93 Difference]: Finished difference Result 617 states and 696 transitions. [2024-11-22 20:58:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 20:58:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.857142857142857) internal successors, (96), 15 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2024-11-22 20:58:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:35,905 INFO L225 Difference]: With dead ends: 617 [2024-11-22 20:58:35,905 INFO L226 Difference]: Without dead ends: 617 [2024-11-22 20:58:35,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-22 20:58:35,905 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 499 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:35,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 3090 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 20:58:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-22 20:58:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2024-11-22 20:58:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 446 states have (on average 1.5336322869955157) internal successors, (684), 606 states have internal predecessors, (684), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 691 transitions. [2024-11-22 20:58:35,916 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 691 transitions. Word has length 98 [2024-11-22 20:58:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:35,916 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 691 transitions. [2024-11-22 20:58:35,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.857142857142857) internal successors, (96), 15 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 691 transitions. [2024-11-22 20:58:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 20:58:35,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:35,916 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:35,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 20:58:35,917 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:35,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1610945287, now seen corresponding path program 1 times [2024-11-22 20:58:35,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:35,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415449183] [2024-11-22 20:58:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:35,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415449183] [2024-11-22 20:58:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415449183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:36,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 20:58:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224932925] [2024-11-22 20:58:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:36,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 20:58:36,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 20:58:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-22 20:58:36,468 INFO L87 Difference]: Start difference. First operand 613 states and 691 transitions. Second operand has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:37,626 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2024-11-22 20:58:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 20:58:37,626 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2024-11-22 20:58:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:37,628 INFO L225 Difference]: With dead ends: 616 [2024-11-22 20:58:37,628 INFO L226 Difference]: Without dead ends: 616 [2024-11-22 20:58:37,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-22 20:58:37,629 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 497 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:37,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 2569 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 20:58:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-22 20:58:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 613. [2024-11-22 20:58:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 446 states have (on average 1.531390134529148) internal successors, (683), 606 states have internal predecessors, (683), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 690 transitions. [2024-11-22 20:58:37,635 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 690 transitions. Word has length 98 [2024-11-22 20:58:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:37,635 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 690 transitions. [2024-11-22 20:58:37,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 690 transitions. [2024-11-22 20:58:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 20:58:37,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:37,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:37,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 20:58:37,636 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:37,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1492267811, now seen corresponding path program 1 times [2024-11-22 20:58:37,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:37,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067420155] [2024-11-22 20:58:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067420155] [2024-11-22 20:58:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067420155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397871874] [2024-11-22 20:58:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:38,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:38,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:38,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:38,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 20:58:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:38,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 20:58:38,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:38,262 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:38,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:38,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:38,330 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:38,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:38,356 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:38,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:38,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:38,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:38,425 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:38,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:38,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:38,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:38,439 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1745 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1745) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 20:58:38,442 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1745 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-22 20:58:38,448 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1745 (Array Int Int)) (v_ArrVal_1744 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1744))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1745)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 20:58:38,481 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1745 (Array Int Int)) (v_ArrVal_1744 (Array Int Int)) (v_ArrVal_1743 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1743))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1744)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1745)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 20:58:38,536 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2024-11-22 20:58:38,536 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 105 treesize of output 104 [2024-11-22 20:58:38,540 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1745 (Array Int Int)) (v_ArrVal_1744 (Array Int Int)) (v_ArrVal_1743 (Array Int Int)) (v_ArrVal_1748 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem51#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1748))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1743)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1744)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1745)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-22 20:58:38,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397871874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:38,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:38,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 21 [2024-11-22 20:58:38,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85111285] [2024-11-22 20:58:38,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:38,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 20:58:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 20:58:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=461, Unknown=17, NotChecked=240, Total=812 [2024-11-22 20:58:38,543 INFO L87 Difference]: Start difference. First operand 613 states and 690 transitions. Second operand has 22 states, 19 states have (on average 6.578947368421052) internal successors, (125), 22 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:39,483 INFO L93 Difference]: Finished difference Result 615 states and 694 transitions. [2024-11-22 20:58:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 20:58:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.578947368421052) internal successors, (125), 22 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 99 [2024-11-22 20:58:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:39,485 INFO L225 Difference]: With dead ends: 615 [2024-11-22 20:58:39,485 INFO L226 Difference]: Without dead ends: 615 [2024-11-22 20:58:39,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=881, Unknown=17, NotChecked=330, Total=1406 [2024-11-22 20:58:39,486 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 489 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:39,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 3362 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 20:58:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-22 20:58:39,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 612. [2024-11-22 20:58:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 446 states have (on average 1.5291479820627802) internal successors, (682), 605 states have internal predecessors, (682), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 689 transitions. [2024-11-22 20:58:39,491 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 689 transitions. Word has length 99 [2024-11-22 20:58:39,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:39,491 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 689 transitions. [2024-11-22 20:58:39,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.578947368421052) internal successors, (125), 22 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 20:58:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 689 transitions. [2024-11-22 20:58:39,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 20:58:39,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:39,492 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:39,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 20:58:39,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:39,693 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:39,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1492267812, now seen corresponding path program 1 times [2024-11-22 20:58:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722461426] [2024-11-22 20:58:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722461426] [2024-11-22 20:58:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722461426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200976973] [2024-11-22 20:58:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:40,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:40,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:40,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 20:58:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:40,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 20:58:40,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:40,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 20:58:40,545 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:40,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:40,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:40,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2024-11-22 20:58:40,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2024-11-22 20:58:40,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:40,660 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:40,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:40,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:40,713 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:40,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:40,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:40,763 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:40,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:40,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:40,812 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:40,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 20:58:40,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:40,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:40,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:40,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:40,866 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1911 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-22 20:58:40,872 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1911 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-22 20:58:40,889 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1910))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 24 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1909) .cse0 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int))) (<= 0 (+ 20 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1909) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1910) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-22 20:58:40,898 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1909) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1910) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1910))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1909) .cse2 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2024-11-22 20:58:40,915 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int)) (v_ArrVal_1908 (Array Int Int)) (v_ArrVal_1907 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1907))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1908) .cse0 v_ArrVal_1909) (select (select (store .cse1 .cse0 v_ArrVal_1910) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1911))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int)) (v_ArrVal_1908 (Array Int Int)) (v_ArrVal_1907 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1907))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1910))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1908) .cse3 v_ArrVal_1909) .cse4 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-22 20:58:40,937 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int)) (v_ArrVal_1908 (Array Int Int)) (v_ArrVal_1907 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1907))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1910))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1908) .cse1 v_ArrVal_1909) .cse2 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int)) (v_ArrVal_1908 (Array Int Int)) (v_ArrVal_1907 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1907))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1908) .cse6 v_ArrVal_1909) (select (select (store .cse7 .cse6 v_ArrVal_1910) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1911))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20)))))) is different from false [2024-11-22 20:58:40,992 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int)) (v_ArrVal_1908 (Array Int Int)) (v_ArrVal_1918 (Array Int Int)) (v_ArrVal_1907 (Array Int Int)) (v_ArrVal_1917 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1918))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_1907))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1917) .cse0 v_ArrVal_1908) .cse1 v_ArrVal_1909) (select (select (store .cse2 .cse1 v_ArrVal_1910) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1911))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_1912 (Array Int Int)) (v_ArrVal_1911 (Array Int Int)) (v_ArrVal_1910 (Array Int Int)) (v_ArrVal_1909 (Array Int Int)) (v_ArrVal_1908 (Array Int Int)) (v_ArrVal_1918 (Array Int Int)) (v_ArrVal_1907 (Array Int Int)) (v_ArrVal_1917 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1918))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_1907))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_1910))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1917) .cse5 v_ArrVal_1908) .cse6 v_ArrVal_1909) .cse7 v_ArrVal_1911) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_1912) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-22 20:58:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200976973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:40,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:40,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 19 [2024-11-22 20:58:40,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137487303] [2024-11-22 20:58:40,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:40,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 20:58:40,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 20:58:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=394, Unknown=7, NotChecked=322, Total=812 [2024-11-22 20:58:40,996 INFO L87 Difference]: Start difference. First operand 612 states and 689 transitions. Second operand has 20 states, 18 states have (on average 6.833333333333333) internal successors, (123), 20 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:58:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:42,577 INFO L93 Difference]: Finished difference Result 614 states and 693 transitions. [2024-11-22 20:58:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 20:58:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.833333333333333) internal successors, (123), 20 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-11-22 20:58:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:42,579 INFO L225 Difference]: With dead ends: 614 [2024-11-22 20:58:42,579 INFO L226 Difference]: Without dead ends: 614 [2024-11-22 20:58:42,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=690, Unknown=7, NotChecked=420, Total=1260 [2024-11-22 20:58:42,580 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 485 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:42,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 3033 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 20:58:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-22 20:58:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 596. [2024-11-22 20:58:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 432 states have (on average 1.5416666666666667) internal successors, (666), 590 states have internal predecessors, (666), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:58:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 672 transitions. [2024-11-22 20:58:42,587 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 672 transitions. Word has length 99 [2024-11-22 20:58:42,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:42,587 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 672 transitions. [2024-11-22 20:58:42,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.833333333333333) internal successors, (123), 20 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:58:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 672 transitions. [2024-11-22 20:58:42,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 20:58:42,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:42,588 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:42,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 20:58:42,788 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,SelfDestructingSolverStorable27 [2024-11-22 20:58:42,789 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:42,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash -490544312, now seen corresponding path program 1 times [2024-11-22 20:58:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915594271] [2024-11-22 20:58:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915594271] [2024-11-22 20:58:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915594271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:43,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 20:58:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646988623] [2024-11-22 20:58:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:43,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 20:58:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 20:58:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-22 20:58:43,416 INFO L87 Difference]: Start difference. First operand 596 states and 672 transitions. Second operand has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:44,218 INFO L93 Difference]: Finished difference Result 619 states and 698 transitions. [2024-11-22 20:58:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 20:58:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-22 20:58:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:44,220 INFO L225 Difference]: With dead ends: 619 [2024-11-22 20:58:44,220 INFO L226 Difference]: Without dead ends: 619 [2024-11-22 20:58:44,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-22 20:58:44,221 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 502 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:44,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 2464 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 20:58:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-22 20:58:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 615. [2024-11-22 20:58:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 450 states have (on average 1.5244444444444445) internal successors, (686), 608 states have internal predecessors, (686), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 693 transitions. [2024-11-22 20:58:44,226 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 693 transitions. Word has length 102 [2024-11-22 20:58:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:44,226 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 693 transitions. [2024-11-22 20:58:44,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 693 transitions. [2024-11-22 20:58:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 20:58:44,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:44,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:44,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 20:58:44,227 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:44,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash -490544311, now seen corresponding path program 1 times [2024-11-22 20:58:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124571582] [2024-11-22 20:58:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:44,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:44,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124571582] [2024-11-22 20:58:44,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124571582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:58:44,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:58:44,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 20:58:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052691389] [2024-11-22 20:58:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:58:44,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 20:58:44,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 20:58:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-22 20:58:44,999 INFO L87 Difference]: Start difference. First operand 615 states and 693 transitions. Second operand has 18 states, 16 states have (on average 6.25) internal successors, (100), 17 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:46,609 INFO L93 Difference]: Finished difference Result 618 states and 697 transitions. [2024-11-22 20:58:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 20:58:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.25) internal successors, (100), 17 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-22 20:58:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:46,611 INFO L225 Difference]: With dead ends: 618 [2024-11-22 20:58:46,611 INFO L226 Difference]: Without dead ends: 618 [2024-11-22 20:58:46,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-22 20:58:46,612 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 480 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:46,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 3369 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 20:58:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-22 20:58:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 615. [2024-11-22 20:58:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 450 states have (on average 1.5222222222222221) internal successors, (685), 608 states have internal predecessors, (685), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 692 transitions. [2024-11-22 20:58:46,616 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 692 transitions. Word has length 102 [2024-11-22 20:58:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:46,617 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 692 transitions. [2024-11-22 20:58:46,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.25) internal successors, (100), 17 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 692 transitions. [2024-11-22 20:58:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 20:58:46,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:46,617 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:46,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 20:58:46,617 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:46,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1639492837, now seen corresponding path program 1 times [2024-11-22 20:58:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683497724] [2024-11-22 20:58:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:47,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:47,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683497724] [2024-11-22 20:58:47,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683497724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:47,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294241551] [2024-11-22 20:58:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:47,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:47,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:47,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:47,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 20:58:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:47,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 20:58:47,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:47,367 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:47,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:47,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:47,405 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:47,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:47,443 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:47,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:47,472 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:47,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:47,507 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:47,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:47,542 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:47,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 20:58:47,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2024-11-22 20:58:47,560 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-22 20:58:47,560 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 [2024-11-22 20:58:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:47,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:48,013 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2024-11-22 20:58:48,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 794 [2024-11-22 20:58:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294241551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:48,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:58:48,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 21 [2024-11-22 20:58:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83224078] [2024-11-22 20:58:48,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:58:48,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 20:58:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:58:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 20:58:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=850, Unknown=57, NotChecked=0, Total=1056 [2024-11-22 20:58:48,104 INFO L87 Difference]: Start difference. First operand 615 states and 692 transitions. Second operand has 22 states, 20 states have (on average 6.2) internal successors, (124), 21 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:58:48,989 INFO L93 Difference]: Finished difference Result 617 states and 696 transitions. [2024-11-22 20:58:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 20:58:48,990 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 6.2) internal successors, (124), 21 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2024-11-22 20:58:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:58:48,991 INFO L225 Difference]: With dead ends: 617 [2024-11-22 20:58:48,991 INFO L226 Difference]: Without dead ends: 617 [2024-11-22 20:58:48,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=1478, Unknown=57, NotChecked=0, Total=1806 [2024-11-22 20:58:48,992 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 487 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 20:58:48,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2788 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 20:58:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-22 20:58:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 614. [2024-11-22 20:58:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 450 states have (on average 1.52) internal successors, (684), 607 states have internal predecessors, (684), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:58:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 691 transitions. [2024-11-22 20:58:48,997 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 691 transitions. Word has length 103 [2024-11-22 20:58:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:58:48,998 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 691 transitions. [2024-11-22 20:58:48,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 6.2) internal successors, (124), 21 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:58:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 691 transitions. [2024-11-22 20:58:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 20:58:48,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:58:48,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:58:49,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 20:58:49,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:49,199 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:58:49,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:58:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1639492838, now seen corresponding path program 1 times [2024-11-22 20:58:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:58:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779517079] [2024-11-22 20:58:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:58:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:58:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779517079] [2024-11-22 20:58:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779517079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:58:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013397832] [2024-11-22 20:58:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:58:50,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 20:58:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 20:58:50,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 20:58:50,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 20:58:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:58:50,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-22 20:58:50,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 20:58:50,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 20:58:50,497 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:50,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:50,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2024-11-22 20:58:50,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 20:58:50,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2024-11-22 20:58:50,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:50,663 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:50,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 20:58:50,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:50,746 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:50,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 20:58:50,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:50,807 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:50,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 20:58:50,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:50,887 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:50,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 20:58:50,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:50,940 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 20:58:50,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 20:58:50,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-22 20:58:50,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 18 [2024-11-22 20:58:50,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-22 20:58:50,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 20:58:50,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 20:58:50,976 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 20:58:50,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 20:58:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:58:50,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 20:58:51,511 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0))) (forall ((v_ArrVal_2435 (Array Int Int)) (v_ArrVal_2433 (Array Int Int)) (v_ArrVal_2432 (Array Int Int)) (v_ArrVal_2431 (Array Int Int)) (v_ArrVal_2430 (Array Int Int))) (< 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2430))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2431) .cse1 v_ArrVal_2432) (select (select (store .cse2 .cse1 v_ArrVal_2433) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2435))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))) (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int) (v_ArrVal_2435 (Array Int Int)) (v_ArrVal_2434 (Array Int Int)) (v_ArrVal_2433 (Array Int Int)) (v_ArrVal_2432 (Array Int Int)) (v_ArrVal_2431 (Array Int Int)) (v_ArrVal_2430 (Array Int Int))) (or (forall ((v_ArrVal_2436 Int)) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2430))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_2433))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2431) .cse4 v_ArrVal_2432) .cse5 v_ArrVal_2435) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc58#1.base_7| v_ArrVal_2436) (select (select (store .cse6 .cse5 v_ArrVal_2434) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0))))))) is different from false [2024-11-22 20:59:00,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 20:59:00,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 604 treesize of output 622 [2024-11-22 20:59:01,071 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2429 (Array Int Int)) (v_ArrVal_2428 (Array Int Int)) (v_ArrVal_2435 (Array Int Int)) (v_ArrVal_2434 (Array Int Int)) (v_ArrVal_2433 (Array Int Int)) (v_ArrVal_2432 (Array Int Int)) (v_ArrVal_2442 (Array Int Int)) (v_ArrVal_2431 (Array Int Int)) (v_ArrVal_2441 (Array Int Int)) (v_ArrVal_2430 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int) (v_ArrVal_2436 Int)) (or (= |v_ULTIMATE.start_main_#t~malloc58#1.base_7| |c_ULTIMATE.start_main_#t~mem51#1.base|) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2442))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse0 v_ArrVal_2428))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_2430))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse2 v_ArrVal_2433))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2441) .cse0 v_ArrVal_2429) .cse1 v_ArrVal_2431) .cse2 v_ArrVal_2432) .cse3 v_ArrVal_2435) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 3) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc58#1.base_7| v_ArrVal_2436) (select (select (store .cse5 .cse3 v_ArrVal_2434) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))) (forall ((v_prenex_19 (Array Int Int)) (v_prenex_20 (Array Int Int)) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_prenex_28 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (< 0 (+ (select (select (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_25))) (let ((.cse9 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse9 v_prenex_20))) (let ((.cse10 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store .cse13 .cse10 v_prenex_28))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_27) .cse9 v_prenex_19) .cse10 v_prenex_26) .cse11 v_prenex_24) (select (select (store .cse12 .cse11 v_prenex_23) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_22))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))))) is different from false [2024-11-22 20:59:01,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013397832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 20:59:01,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 20:59:01,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 25 [2024-11-22 20:59:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684702976] [2024-11-22 20:59:01,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 20:59:01,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 20:59:01,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:59:01,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 20:59:01,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1064, Unknown=45, NotChecked=138, Total=1406 [2024-11-22 20:59:01,084 INFO L87 Difference]: Start difference. First operand 614 states and 691 transitions. Second operand has 26 states, 24 states have (on average 5.375) internal successors, (129), 24 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:59:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:59:21,622 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2024-11-22 20:59:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 20:59:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.375) internal successors, (129), 24 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-22 20:59:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:59:21,624 INFO L225 Difference]: With dead ends: 616 [2024-11-22 20:59:21,624 INFO L226 Difference]: Without dead ends: 616 [2024-11-22 20:59:21,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=274, Invalid=1759, Unknown=45, NotChecked=178, Total=2256 [2024-11-22 20:59:21,626 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 487 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 4200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-22 20:59:21,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 3897 Invalid, 4200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2024-11-22 20:59:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-22 20:59:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 594. [2024-11-22 20:59:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 432 states have (on average 1.537037037037037) internal successors, (664), 588 states have internal predecessors, (664), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 20:59:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 670 transitions. [2024-11-22 20:59:21,631 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 670 transitions. Word has length 103 [2024-11-22 20:59:21,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:59:21,631 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 670 transitions. [2024-11-22 20:59:21,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.375) internal successors, (129), 24 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 20:59:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 670 transitions. [2024-11-22 20:59:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 20:59:21,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:59:21,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:59:21,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 20:59:21,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-22 20:59:21,833 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:59:21,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:59:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1968749023, now seen corresponding path program 1 times [2024-11-22 20:59:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:59:21,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415084050] [2024-11-22 20:59:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:59:21,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:59:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 20:59:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 20:59:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 20:59:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415084050] [2024-11-22 20:59:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415084050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 20:59:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 20:59:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 20:59:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575832765] [2024-11-22 20:59:23,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 20:59:23,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 20:59:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 20:59:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 20:59:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-22 20:59:23,219 INFO L87 Difference]: Start difference. First operand 594 states and 670 transitions. Second operand has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 15 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:59:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 20:59:31,872 INFO L93 Difference]: Finished difference Result 620 states and 699 transitions. [2024-11-22 20:59:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 20:59:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 15 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2024-11-22 20:59:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 20:59:31,874 INFO L225 Difference]: With dead ends: 620 [2024-11-22 20:59:31,874 INFO L226 Difference]: Without dead ends: 620 [2024-11-22 20:59:31,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-22 20:59:31,875 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 484 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-22 20:59:31,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 2496 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-22 20:59:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-22 20:59:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 616. [2024-11-22 20:59:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 453 states have (on average 1.5165562913907285) internal successors, (687), 609 states have internal predecessors, (687), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 20:59:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 694 transitions. [2024-11-22 20:59:31,880 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 694 transitions. Word has length 105 [2024-11-22 20:59:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 20:59:31,880 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 694 transitions. [2024-11-22 20:59:31,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 15 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 20:59:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 694 transitions. [2024-11-22 20:59:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 20:59:31,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 20:59:31,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 20:59:31,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 20:59:31,881 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2024-11-22 20:59:31,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 20:59:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1968749024, now seen corresponding path program 1 times [2024-11-22 20:59:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 20:59:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025189087] [2024-11-22 20:59:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 20:59:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 20:59:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat