./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 15:52:24,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 15:52:24,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 15:52:24,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 15:52:24,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 15:52:24,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 15:52:24,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 15:52:24,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 15:52:24,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 15:52:24,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 15:52:24,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 15:52:24,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 15:52:24,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 15:52:24,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 15:52:24,946 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 15:52:24,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 15:52:24,946 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 15:52:24,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 15:52:24,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 15:52:24,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 15:52:24,947 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 15:52:24,948 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 15:52:24,948 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 15:52:24,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 15:52:24,948 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 15:52:24,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 15:52:24,949 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 15:52:24,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 15:52:24,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 15:52:24,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 15:52:24,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 15:52:24,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 15:52:24,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 15:52:24,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 15:52:24,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 15:52:24,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 15:52:24,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 15:52:24,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 15:52:24,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 15:52:24,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 15:52:24,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 15:52:24,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 15:52:24,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2024-11-12 15:52:25,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 15:52:25,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 15:52:25,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 15:52:25,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 15:52:25,174 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 15:52:25,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-1.i [2024-11-12 15:52:26,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 15:52:26,712 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 15:52:26,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-1.i [2024-11-12 15:52:26,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450b67d6c/c369e763c5954d48b173d678450ba6dc/FLAG182d78595 [2024-11-12 15:52:27,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450b67d6c/c369e763c5954d48b173d678450ba6dc [2024-11-12 15:52:27,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 15:52:27,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 15:52:27,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 15:52:27,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 15:52:27,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 15:52:27,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76542276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27, skipping insertion in model container [2024-11-12 15:52:27,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 15:52:27,399 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 15:52:27,430 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 15:52:27,433 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 15:52:27,439 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 15:52:27,451 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 15:52:27,471 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 15:52:27,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 15:52:27,488 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 15:52:27,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 15:52:27,606 INFO L204 MainTranslator]: Completed translation [2024-11-12 15:52:27,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27 WrapperNode [2024-11-12 15:52:27,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 15:52:27,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 15:52:27,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 15:52:27,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 15:52:27,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,678 INFO L138 Inliner]: procedures = 176, calls = 170, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 805 [2024-11-12 15:52:27,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 15:52:27,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 15:52:27,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 15:52:27,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 15:52:27,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,741 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]. [2024-11-12 15:52:27,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 15:52:27,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 15:52:27,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 15:52:27,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 15:52:27,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (1/1) ... [2024-11-12 15:52:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 15:52:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:27,852 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) [2024-11-12 15:52:27,857 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 [2024-11-12 15:52:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 15:52:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 15:52:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 15:52:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 15:52:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 15:52:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 15:52:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 15:52:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 15:52:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 15:52:27,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 15:52:28,035 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 15:52:28,037 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 15:52:28,039 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-12 15:52:28,073 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-12 15:52:29,179 INFO L? ?]: Removed 762 outVars from TransFormulas that were not future-live. [2024-11-12 15:52:29,179 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 15:52:29,199 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 15:52:29,199 INFO L316 CfgBuilder]: Removed 31 assume(true) statements. [2024-11-12 15:52:29,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:52:29 BoogieIcfgContainer [2024-11-12 15:52:29,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 15:52:29,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 15:52:29,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 15:52:29,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 15:52:29,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:52:27" (1/3) ... [2024-11-12 15:52:29,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e7d614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:52:29, skipping insertion in model container [2024-11-12 15:52:29,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:52:27" (2/3) ... [2024-11-12 15:52:29,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e7d614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:52:29, skipping insertion in model container [2024-11-12 15:52:29,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:52:29" (3/3) ... [2024-11-12 15:52:29,208 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test1-1.i [2024-11-12 15:52:29,219 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 15:52:29,220 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 320 error locations. [2024-11-12 15:52:29,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 15:52:29,265 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;@339e87d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 15:52:29,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 320 error locations. [2024-11-12 15:52:29,269 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) [2024-11-12 15:52:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-12 15:52:29,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:29,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 15:52:29,273 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)] === [2024-11-12 15:52:29,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash 45876316, now seen corresponding path program 1 times [2024-11-12 15:52:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:29,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881129136] [2024-11-12 15:52:29,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881129136] [2024-11-12 15:52:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881129136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:29,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:29,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:52:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635185868] [2024-11-12 15:52:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:29,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:52:29,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:29,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:52:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:52:29,509 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) [2024-11-12 15:52:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:29,942 INFO L93 Difference]: Finished difference Result 680 states and 769 transitions. [2024-11-12 15:52:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:52:29,946 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 [2024-11-12 15:52:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:29,957 INFO L225 Difference]: With dead ends: 680 [2024-11-12 15:52:29,957 INFO L226 Difference]: Without dead ends: 678 [2024-11-12 15:52:29,958 INFO L434 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 [2024-11-12 15:52:29,961 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 678 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:29,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 469 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 15:52:29,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-12 15:52:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 676. [2024-11-12 15:52:30,017 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) [2024-11-12 15:52:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 764 transitions. [2024-11-12 15:52:30,019 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 764 transitions. Word has length 5 [2024-11-12 15:52:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:30,020 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 764 transitions. [2024-11-12 15:52:30,020 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) [2024-11-12 15:52:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 764 transitions. [2024-11-12 15:52:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-12 15:52:30,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:30,020 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 15:52:30,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 15:52:30,021 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)] === [2024-11-12 15:52:30,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash 45876317, now seen corresponding path program 1 times [2024-11-12 15:52:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:30,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239271348] [2024-11-12 15:52:30,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:30,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239271348] [2024-11-12 15:52:30,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239271348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 15:52:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601470636] [2024-11-12 15:52:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:30,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:52:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:52:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:52:30,099 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) [2024-11-12 15:52:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:30,471 INFO L93 Difference]: Finished difference Result 753 states and 847 transitions. [2024-11-12 15:52:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:52:30,471 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 [2024-11-12 15:52:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:30,474 INFO L225 Difference]: With dead ends: 753 [2024-11-12 15:52:30,474 INFO L226 Difference]: Without dead ends: 753 [2024-11-12 15:52:30,474 INFO L434 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 [2024-11-12 15:52:30,475 INFO L435 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 [2024-11-12 15:52:30,475 INFO L436 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] [2024-11-12 15:52:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-12 15:52:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 705. [2024-11-12 15:52:30,496 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) [2024-11-12 15:52:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 832 transitions. [2024-11-12 15:52:30,502 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 832 transitions. Word has length 5 [2024-11-12 15:52:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:30,502 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 832 transitions. [2024-11-12 15:52:30,503 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) [2024-11-12 15:52:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 832 transitions. [2024-11-12 15:52:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-12 15:52:30,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:30,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 15:52:30,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 15:52:30,503 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)] === [2024-11-12 15:52:30,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:30,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1423342697, now seen corresponding path program 1 times [2024-11-12 15:52:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:30,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207116789] [2024-11-12 15:52:30,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:30,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207116789] [2024-11-12 15:52:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207116789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:30,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:30,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:52:30,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658127837] [2024-11-12 15:52:30,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:30,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:52:30,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:30,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:52:30,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:52:30,548 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) [2024-11-12 15:52:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:30,592 INFO L93 Difference]: Finished difference Result 1386 states and 1639 transitions. [2024-11-12 15:52:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:52:30,593 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 [2024-11-12 15:52:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:30,601 INFO L225 Difference]: With dead ends: 1386 [2024-11-12 15:52:30,601 INFO L226 Difference]: Without dead ends: 1386 [2024-11-12 15:52:30,601 INFO L434 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 [2024-11-12 15:52:30,606 INFO L435 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 [2024-11-12 15:52:30,607 INFO L436 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] [2024-11-12 15:52:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-12 15:52:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 706. [2024-11-12 15:52:30,637 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) [2024-11-12 15:52:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 833 transitions. [2024-11-12 15:52:30,639 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 833 transitions. Word has length 6 [2024-11-12 15:52:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:30,639 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 833 transitions. [2024-11-12 15:52:30,639 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) [2024-11-12 15:52:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 833 transitions. [2024-11-12 15:52:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-12 15:52:30,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:30,644 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:52:30,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 15:52:30,644 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)] === [2024-11-12 15:52:30,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1612480742, now seen corresponding path program 1 times [2024-11-12 15:52:30,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:30,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607856893] [2024-11-12 15:52:30,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607856893] [2024-11-12 15:52:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607856893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:30,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:52:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600765516] [2024-11-12 15:52:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:30,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:52:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:52:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:52:30,753 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) [2024-11-12 15:52:31,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:31,188 INFO L93 Difference]: Finished difference Result 732 states and 886 transitions. [2024-11-12 15:52:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:52:31,188 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 [2024-11-12 15:52:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:31,190 INFO L225 Difference]: With dead ends: 732 [2024-11-12 15:52:31,190 INFO L226 Difference]: Without dead ends: 732 [2024-11-12 15:52:31,191 INFO L434 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 [2024-11-12 15:52:31,191 INFO L435 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 [2024-11-12 15:52:31,192 INFO L436 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] [2024-11-12 15:52:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-12 15:52:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 683. [2024-11-12 15:52:31,199 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) [2024-11-12 15:52:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 810 transitions. [2024-11-12 15:52:31,200 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 810 transitions. Word has length 15 [2024-11-12 15:52:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:31,200 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 810 transitions. [2024-11-12 15:52:31,201 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) [2024-11-12 15:52:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 810 transitions. [2024-11-12 15:52:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-12 15:52:31,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:31,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:52:31,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 15:52:31,201 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)] === [2024-11-12 15:52:31,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1612480743, now seen corresponding path program 1 times [2024-11-12 15:52:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:31,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701076255] [2024-11-12 15:52:31,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:31,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701076255] [2024-11-12 15:52:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701076255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:52:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840511107] [2024-11-12 15:52:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:52:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:52:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:52:31,265 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) [2024-11-12 15:52:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:31,285 INFO L93 Difference]: Finished difference Result 608 states and 707 transitions. [2024-11-12 15:52:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:52:31,286 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 [2024-11-12 15:52:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:31,287 INFO L225 Difference]: With dead ends: 608 [2024-11-12 15:52:31,288 INFO L226 Difference]: Without dead ends: 608 [2024-11-12 15:52:31,288 INFO L434 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 [2024-11-12 15:52:31,289 INFO L435 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 [2024-11-12 15:52:31,289 INFO L436 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] [2024-11-12 15:52:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-12 15:52:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2024-11-12 15:52:31,297 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) [2024-11-12 15:52:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 707 transitions. [2024-11-12 15:52:31,299 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 707 transitions. Word has length 15 [2024-11-12 15:52:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:31,299 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 707 transitions. [2024-11-12 15:52:31,299 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) [2024-11-12 15:52:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 707 transitions. [2024-11-12 15:52:31,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-12 15:52:31,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:31,300 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:52:31,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 15:52:31,300 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)] === [2024-11-12 15:52:31,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash -889043613, now seen corresponding path program 1 times [2024-11-12 15:52:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666510956] [2024-11-12 15:52:31,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:31,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:31,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666510956] [2024-11-12 15:52:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666510956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 15:52:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634197147] [2024-11-12 15:52:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:31,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:52:31,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:52:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:52:31,393 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) [2024-11-12 15:52:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:31,521 INFO L93 Difference]: Finished difference Result 590 states and 682 transitions. [2024-11-12 15:52:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:52:31,521 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 [2024-11-12 15:52:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:31,523 INFO L225 Difference]: With dead ends: 590 [2024-11-12 15:52:31,523 INFO L226 Difference]: Without dead ends: 590 [2024-11-12 15:52:31,523 INFO L434 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 [2024-11-12 15:52:31,524 INFO L435 NwaCegarLoop]: 580 mSDtfsCounter, 41 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:31,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1712 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 15:52:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-12 15:52:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 587. [2024-11-12 15:52:31,536 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) [2024-11-12 15:52:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 679 transitions. [2024-11-12 15:52:31,537 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 679 transitions. Word has length 17 [2024-11-12 15:52:31,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:31,541 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 679 transitions. [2024-11-12 15:52:31,541 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) [2024-11-12 15:52:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 679 transitions. [2024-11-12 15:52:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-12 15:52:31,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:31,542 INFO L218 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] [2024-11-12 15:52:31,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 15:52:31,542 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)] === [2024-11-12 15:52:31,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1279459759, now seen corresponding path program 1 times [2024-11-12 15:52:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66526526] [2024-11-12 15:52:31,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66526526] [2024-11-12 15:52:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66526526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:31,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:31,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:52:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955312613] [2024-11-12 15:52:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:31,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:52:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:52:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:52:31,676 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) [2024-11-12 15:52:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:32,074 INFO L93 Difference]: Finished difference Result 680 states and 766 transitions. [2024-11-12 15:52:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 15:52:32,074 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 [2024-11-12 15:52:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:32,076 INFO L225 Difference]: With dead ends: 680 [2024-11-12 15:52:32,076 INFO L226 Difference]: Without dead ends: 680 [2024-11-12 15:52:32,076 INFO L434 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 [2024-11-12 15:52:32,077 INFO L435 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 [2024-11-12 15:52:32,077 INFO L436 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] [2024-11-12 15:52:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-12 15:52:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 583. [2024-11-12 15:52:32,083 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) [2024-11-12 15:52:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 675 transitions. [2024-11-12 15:52:32,084 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 675 transitions. Word has length 31 [2024-11-12 15:52:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:32,084 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 675 transitions. [2024-11-12 15:52:32,084 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) [2024-11-12 15:52:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 675 transitions. [2024-11-12 15:52:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-12 15:52:32,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:32,086 INFO L218 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] [2024-11-12 15:52:32,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 15:52:32,086 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)] === [2024-11-12 15:52:32,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1848554501, now seen corresponding path program 1 times [2024-11-12 15:52:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592032832] [2024-11-12 15:52:32,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592032832] [2024-11-12 15:52:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592032832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 15:52:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525598601] [2024-11-12 15:52:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:32,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 15:52:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 15:52:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 15:52:32,145 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) [2024-11-12 15:52:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:32,180 INFO L93 Difference]: Finished difference Result 583 states and 671 transitions. [2024-11-12 15:52:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 15:52:32,180 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 [2024-11-12 15:52:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:32,182 INFO L225 Difference]: With dead ends: 583 [2024-11-12 15:52:32,182 INFO L226 Difference]: Without dead ends: 583 [2024-11-12 15:52:32,182 INFO L434 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 [2024-11-12 15:52:32,182 INFO L435 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 [2024-11-12 15:52:32,182 INFO L436 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] [2024-11-12 15:52:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-12 15:52:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2024-11-12 15:52:32,188 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) [2024-11-12 15:52:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 671 transitions. [2024-11-12 15:52:32,189 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 671 transitions. Word has length 65 [2024-11-12 15:52:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:32,189 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 671 transitions. [2024-11-12 15:52:32,189 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) [2024-11-12 15:52:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 671 transitions. [2024-11-12 15:52:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-12 15:52:32,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:32,191 INFO L218 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] [2024-11-12 15:52:32,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 15:52:32,191 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)] === [2024-11-12 15:52:32,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:32,191 INFO L85 PathProgramCache]: Analyzing trace with hash -516543407, now seen corresponding path program 1 times [2024-11-12 15:52:32,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:32,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037015183] [2024-11-12 15:52:32,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037015183] [2024-11-12 15:52:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037015183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:32,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:32,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 15:52:32,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081894395] [2024-11-12 15:52:32,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:32,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:52:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:52:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:52:32,278 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) [2024-11-12 15:52:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:32,306 INFO L93 Difference]: Finished difference Result 679 states and 794 transitions. [2024-11-12 15:52:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:52:32,306 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 [2024-11-12 15:52:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:32,308 INFO L225 Difference]: With dead ends: 679 [2024-11-12 15:52:32,308 INFO L226 Difference]: Without dead ends: 679 [2024-11-12 15:52:32,308 INFO L434 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 [2024-11-12 15:52:32,309 INFO L435 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 [2024-11-12 15:52:32,309 INFO L436 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] [2024-11-12 15:52:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-12 15:52:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-11-12 15:52:32,315 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) [2024-11-12 15:52:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 794 transitions. [2024-11-12 15:52:32,317 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 794 transitions. Word has length 73 [2024-11-12 15:52:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:32,317 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 794 transitions. [2024-11-12 15:52:32,317 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) [2024-11-12 15:52:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 794 transitions. [2024-11-12 15:52:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-12 15:52:32,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:32,318 INFO L218 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] [2024-11-12 15:52:32,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 15:52:32,318 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)] === [2024-11-12 15:52:32,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash 416038488, now seen corresponding path program 1 times [2024-11-12 15:52:32,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476568716] [2024-11-12 15:52:32,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476568716] [2024-11-12 15:52:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476568716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:32,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 15:52:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878339347] [2024-11-12 15:52:32,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:32,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 15:52:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 15:52:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-12 15:52:32,773 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) [2024-11-12 15:52:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:33,393 INFO L93 Difference]: Finished difference Result 641 states and 756 transitions. [2024-11-12 15:52:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 15:52:33,393 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 [2024-11-12 15:52:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:33,395 INFO L225 Difference]: With dead ends: 641 [2024-11-12 15:52:33,395 INFO L226 Difference]: Without dead ends: 641 [2024-11-12 15:52:33,396 INFO L434 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 [2024-11-12 15:52:33,396 INFO L435 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 [2024-11-12 15:52:33,396 INFO L436 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] [2024-11-12 15:52:33,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-12 15:52:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 601. [2024-11-12 15:52:33,402 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) [2024-11-12 15:52:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 677 transitions. [2024-11-12 15:52:33,404 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 677 transitions. Word has length 76 [2024-11-12 15:52:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:33,404 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 677 transitions. [2024-11-12 15:52:33,404 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) [2024-11-12 15:52:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 677 transitions. [2024-11-12 15:52:33,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-12 15:52:33,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:33,405 INFO L218 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] [2024-11-12 15:52:33,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 15:52:33,405 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)] === [2024-11-12 15:52:33,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 157004196, now seen corresponding path program 1 times [2024-11-12 15:52:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144712608] [2024-11-12 15:52:33,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:33,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:33,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144712608] [2024-11-12 15:52:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144712608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:33,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:33,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 15:52:33,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84499205] [2024-11-12 15:52:33,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:33,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 15:52:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:33,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 15:52:33,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 15:52:33,607 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) [2024-11-12 15:52:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:34,023 INFO L93 Difference]: Finished difference Result 600 states and 676 transitions. [2024-11-12 15:52:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 15:52:34,023 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 [2024-11-12 15:52:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:34,026 INFO L225 Difference]: With dead ends: 600 [2024-11-12 15:52:34,026 INFO L226 Difference]: Without dead ends: 600 [2024-11-12 15:52:34,026 INFO L434 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 [2024-11-12 15:52:34,027 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 2 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-11-12 15:52:34,027 INFO L436 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] [2024-11-12 15:52:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-12 15:52:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2024-11-12 15:52:34,035 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) [2024-11-12 15:52:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 676 transitions. [2024-11-12 15:52:34,036 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 676 transitions. Word has length 81 [2024-11-12 15:52:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:34,037 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 676 transitions. [2024-11-12 15:52:34,037 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) [2024-11-12 15:52:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 676 transitions. [2024-11-12 15:52:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-12 15:52:34,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:34,038 INFO L218 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] [2024-11-12 15:52:34,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 15:52:34,038 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)] === [2024-11-12 15:52:34,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 157004197, now seen corresponding path program 1 times [2024-11-12 15:52:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:34,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543102442] [2024-11-12 15:52:34,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:34,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:34,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543102442] [2024-11-12 15:52:34,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543102442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:34,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:34,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 15:52:34,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809806692] [2024-11-12 15:52:34,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:34,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 15:52:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 15:52:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 15:52:34,307 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) [2024-11-12 15:52:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:34,748 INFO L93 Difference]: Finished difference Result 599 states and 675 transitions. [2024-11-12 15:52:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 15:52:34,749 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 [2024-11-12 15:52:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:34,750 INFO L225 Difference]: With dead ends: 599 [2024-11-12 15:52:34,750 INFO L226 Difference]: Without dead ends: 599 [2024-11-12 15:52:34,751 INFO L434 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 [2024-11-12 15:52:34,751 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 1 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-11-12 15:52:34,751 INFO L436 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] [2024-11-12 15:52:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-12 15:52:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2024-11-12 15:52:34,757 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) [2024-11-12 15:52:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 675 transitions. [2024-11-12 15:52:34,758 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 675 transitions. Word has length 81 [2024-11-12 15:52:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:34,758 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 675 transitions. [2024-11-12 15:52:34,758 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) [2024-11-12 15:52:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 675 transitions. [2024-11-12 15:52:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-12 15:52:34,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:34,759 INFO L218 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] [2024-11-12 15:52:34,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 15:52:34,760 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)] === [2024-11-12 15:52:34,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:34,760 INFO L85 PathProgramCache]: Analyzing trace with hash 896889099, now seen corresponding path program 1 times [2024-11-12 15:52:34,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:34,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065591827] [2024-11-12 15:52:34,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:34,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:34,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:34,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:34,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065591827] [2024-11-12 15:52:34,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065591827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:34,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:34,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 15:52:34,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576719248] [2024-11-12 15:52:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:34,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 15:52:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 15:52:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 15:52:34,923 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) [2024-11-12 15:52:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:35,461 INFO L93 Difference]: Finished difference Result 611 states and 690 transitions. [2024-11-12 15:52:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 15:52:35,462 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 [2024-11-12 15:52:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:35,465 INFO L225 Difference]: With dead ends: 611 [2024-11-12 15:52:35,465 INFO L226 Difference]: Without dead ends: 611 [2024-11-12 15:52:35,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-12 15:52:35,466 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 10 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:35,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2322 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 15:52:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-12 15:52:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 605. [2024-11-12 15:52:35,472 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) [2024-11-12 15:52:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 685 transitions. [2024-11-12 15:52:35,473 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 685 transitions. Word has length 89 [2024-11-12 15:52:35,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:35,473 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 685 transitions. [2024-11-12 15:52:35,474 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) [2024-11-12 15:52:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 685 transitions. [2024-11-12 15:52:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-12 15:52:35,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:35,474 INFO L218 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] [2024-11-12 15:52:35,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 15:52:35,475 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)] === [2024-11-12 15:52:35,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 896889100, now seen corresponding path program 1 times [2024-11-12 15:52:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:35,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388328974] [2024-11-12 15:52:35,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:35,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:35,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:35,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388328974] [2024-11-12 15:52:35,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388328974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:35,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:35,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 15:52:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699458673] [2024-11-12 15:52:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:35,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 15:52:35,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 15:52:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 15:52:35,882 INFO L87 Difference]: Start difference. First operand 605 states and 685 transitions. Second operand has 7 states, 6 states have (on average 14.5) 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) [2024-11-12 15:52:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:36,358 INFO L93 Difference]: Finished difference Result 605 states and 684 transitions. [2024-11-12 15:52:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 15:52:36,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) 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 [2024-11-12 15:52:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:36,361 INFO L225 Difference]: With dead ends: 605 [2024-11-12 15:52:36,361 INFO L226 Difference]: Without dead ends: 605 [2024-11-12 15:52:36,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-12 15:52:36,361 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 5 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:36,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1950 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 15:52:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-12 15:52:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-12 15:52:36,367 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) [2024-11-12 15:52:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 684 transitions. [2024-11-12 15:52:36,369 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 684 transitions. Word has length 89 [2024-11-12 15:52:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:36,369 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 684 transitions. [2024-11-12 15:52:36,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) 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) [2024-11-12 15:52:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 684 transitions. [2024-11-12 15:52:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-12 15:52:36,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:36,370 INFO L218 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] [2024-11-12 15:52:36,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 15:52:36,370 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)] === [2024-11-12 15:52:36,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash -962114482, now seen corresponding path program 1 times [2024-11-12 15:52:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220228494] [2024-11-12 15:52:36,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:36,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:36,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:36,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220228494] [2024-11-12 15:52:36,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220228494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:36,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557364143] [2024-11-12 15:52:36,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:36,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:52:36,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:36,787 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) [2024-11-12 15:52:36,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 15:52:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:36,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 15:52:36,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:52:37,077 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:52:37,077 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 [2024-11-12 15:52:37,091 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 [2024-11-12 15:52:37,153 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:37,153 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 [2024-11-12 15:52:37,182 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 [2024-11-12 15:52:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:37,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:52:37,222 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-12 15:52:37,223 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 [2024-11-12 15:52:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557364143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:37,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:52:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 14 [2024-11-12 15:52:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037776069] [2024-11-12 15:52:37,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:52:37,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 15:52:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 15:52:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=198, Unknown=4, NotChecked=0, Total=240 [2024-11-12 15:52:37,250 INFO L87 Difference]: Start difference. First operand 605 states and 684 transitions. Second operand has 15 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 15:52:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:38,270 INFO L93 Difference]: Finished difference Result 604 states and 683 transitions. [2024-11-12 15:52:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 15:52:38,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2024-11-12 15:52:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:38,276 INFO L225 Difference]: With dead ends: 604 [2024-11-12 15:52:38,276 INFO L226 Difference]: Without dead ends: 604 [2024-11-12 15:52:38,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=454, Unknown=5, NotChecked=0, Total=552 [2024-11-12 15:52:38,277 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 483 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:38,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 2776 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 15:52:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-12 15:52:38,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-12 15:52:38,288 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) [2024-11-12 15:52:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 683 transitions. [2024-11-12 15:52:38,290 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 683 transitions. Word has length 90 [2024-11-12 15:52:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:38,294 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 683 transitions. [2024-11-12 15:52:38,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 15:52:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 683 transitions. [2024-11-12 15:52:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-12 15:52:38,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:38,295 INFO L218 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] [2024-11-12 15:52:38,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 15:52:38,496 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 [2024-11-12 15:52:38,496 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)] === [2024-11-12 15:52:38,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:38,497 INFO L85 PathProgramCache]: Analyzing trace with hash -962114481, now seen corresponding path program 1 times [2024-11-12 15:52:38,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:38,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155357900] [2024-11-12 15:52:38,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:38,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:38,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155357900] [2024-11-12 15:52:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155357900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540110941] [2024-11-12 15:52:39,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:52:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:39,066 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) [2024-11-12 15:52:39,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 15:52:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:39,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-12 15:52:39,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:52:39,291 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:52:39,291 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 [2024-11-12 15:52:39,296 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 [2024-11-12 15:52:39,305 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 [2024-11-12 15:52:39,309 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 [2024-11-12 15:52:39,355 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 [2024-11-12 15:52:39,359 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 [2024-11-12 15:52:39,443 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:39,443 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 62 treesize of output 57 [2024-11-12 15:52:39,448 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 [2024-11-12 15:52:39,475 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 [2024-11-12 15:52:39,479 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 [2024-11-12 15:52:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:39,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:52:39,552 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_639 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_639) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_639 (Array Int Int)) (v_ArrVal_640 (Array Int Int))) (<= (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_639) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-12 15:52:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540110941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:39,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:52:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-12 15:52:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851742681] [2024-11-12 15:52:39,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:52:39,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 15:52:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 15:52:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-12 15:52:39,555 INFO L87 Difference]: Start difference. First operand 604 states and 683 transitions. Second operand has 16 states, 13 states have (on average 8.384615384615385) internal successors, (109), 15 states have internal predecessors, (109), 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) [2024-11-12 15:52:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:41,137 INFO L93 Difference]: Finished difference Result 611 states and 690 transitions. [2024-11-12 15:52:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 15:52:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 8.384615384615385) internal successors, (109), 15 states have internal predecessors, (109), 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 [2024-11-12 15:52:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:41,140 INFO L225 Difference]: With dead ends: 611 [2024-11-12 15:52:41,140 INFO L226 Difference]: Without dead ends: 611 [2024-11-12 15:52:41,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=420, Unknown=1, NotChecked=42, Total=552 [2024-11-12 15:52:41,140 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 480 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:41,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 3042 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-12 15:52:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-12 15:52:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 602. [2024-11-12 15:52:41,146 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) [2024-11-12 15:52:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 678 transitions. [2024-11-12 15:52:41,147 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 678 transitions. Word has length 90 [2024-11-12 15:52:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:41,148 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 678 transitions. [2024-11-12 15:52:41,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 8.384615384615385) internal successors, (109), 15 states have internal predecessors, (109), 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) [2024-11-12 15:52:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 678 transitions. [2024-11-12 15:52:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-12 15:52:41,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:41,149 INFO L218 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] [2024-11-12 15:52:41,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 15:52:41,352 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 [2024-11-12 15:52:41,353 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)] === [2024-11-12 15:52:41,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash 232210623, now seen corresponding path program 1 times [2024-11-12 15:52:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:41,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590886851] [2024-11-12 15:52:41,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:41,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:41,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590886851] [2024-11-12 15:52:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590886851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:41,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:41,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-12 15:52:41,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507227474] [2024-11-12 15:52:41,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:41,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 15:52:41,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 15:52:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-12 15:52:41,728 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) [2024-11-12 15:52:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:42,845 INFO L93 Difference]: Finished difference Result 615 states and 694 transitions. [2024-11-12 15:52:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 15:52:42,846 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 [2024-11-12 15:52:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:42,848 INFO L225 Difference]: With dead ends: 615 [2024-11-12 15:52:42,848 INFO L226 Difference]: Without dead ends: 615 [2024-11-12 15:52:42,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-12 15:52:42,850 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 489 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:42,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 3078 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 15:52:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-12 15:52:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 611. [2024-11-12 15:52:42,859 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) [2024-11-12 15:52:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 689 transitions. [2024-11-12 15:52:42,861 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 689 transitions. Word has length 92 [2024-11-12 15:52:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:42,861 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 689 transitions. [2024-11-12 15:52:42,861 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) [2024-11-12 15:52:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 689 transitions. [2024-11-12 15:52:42,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-12 15:52:42,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:42,863 INFO L218 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] [2024-11-12 15:52:42,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 15:52:42,863 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)] === [2024-11-12 15:52:42,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash 232210624, now seen corresponding path program 1 times [2024-11-12 15:52:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733536479] [2024-11-12 15:52:42,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:43,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733536479] [2024-11-12 15:52:43,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733536479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:43,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:43,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 15:52:43,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355835093] [2024-11-12 15:52:43,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:43,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 15:52:43,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 15:52:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-12 15:52:43,310 INFO L87 Difference]: Start difference. First operand 611 states and 689 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) 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) [2024-11-12 15:52:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:44,245 INFO L93 Difference]: Finished difference Result 614 states and 693 transitions. [2024-11-12 15:52:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 15:52:44,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) 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 [2024-11-12 15:52:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:44,247 INFO L225 Difference]: With dead ends: 614 [2024-11-12 15:52:44,247 INFO L226 Difference]: Without dead ends: 614 [2024-11-12 15:52:44,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-12 15:52:44,248 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 500 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:44,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1880 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 15:52:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-12 15:52:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2024-11-12 15:52:44,254 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) [2024-11-12 15:52:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 688 transitions. [2024-11-12 15:52:44,255 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 688 transitions. Word has length 92 [2024-11-12 15:52:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:44,255 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 688 transitions. [2024-11-12 15:52:44,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) 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) [2024-11-12 15:52:44,255 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 688 transitions. [2024-11-12 15:52:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-12 15:52:44,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:44,256 INFO L218 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] [2024-11-12 15:52:44,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 15:52:44,256 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)] === [2024-11-12 15:52:44,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2035156324, now seen corresponding path program 1 times [2024-11-12 15:52:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:44,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571252050] [2024-11-12 15:52:44,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:44,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571252050] [2024-11-12 15:52:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571252050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62155177] [2024-11-12 15:52:44,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:52:44,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:44,678 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) [2024-11-12 15:52:44,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 15:52:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:44,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 15:52:44,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:52:44,961 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:52:44,961 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 [2024-11-12 15:52:44,969 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 [2024-11-12 15:52:45,084 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:45,084 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 [2024-11-12 15:52:45,163 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:45,164 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 [2024-11-12 15:52:45,177 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 [2024-11-12 15:52:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:45,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:52:45,190 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_894 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_894) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-12 15:52:45,202 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_894 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_894) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-12 15:52:45,254 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-12 15:52:45,254 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 [2024-11-12 15:52:45,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62155177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:45,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:52:45,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 17 [2024-11-12 15:52:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669297064] [2024-11-12 15:52:45,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:52:45,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 15:52:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:45,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 15:52:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=8, NotChecked=70, Total=420 [2024-11-12 15:52:45,298 INFO L87 Difference]: Start difference. First operand 611 states and 688 transitions. Second operand has 18 states, 16 states have (on average 7.125) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 15:52:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:46,470 INFO L93 Difference]: Finished difference Result 613 states and 692 transitions. [2024-11-12 15:52:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 15:52:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.125) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 93 [2024-11-12 15:52:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:46,474 INFO L225 Difference]: With dead ends: 613 [2024-11-12 15:52:46,474 INFO L226 Difference]: Without dead ends: 613 [2024-11-12 15:52:46,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=8, NotChecked=102, Total=812 [2024-11-12 15:52:46,474 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 479 mSDsluCounter, 3417 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:46,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 3741 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 15:52:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-12 15:52:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 610. [2024-11-12 15:52:46,486 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) [2024-11-12 15:52:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 687 transitions. [2024-11-12 15:52:46,487 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 687 transitions. Word has length 93 [2024-11-12 15:52:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:46,488 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 687 transitions. [2024-11-12 15:52:46,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.125) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 15:52:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 687 transitions. [2024-11-12 15:52:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-12 15:52:46,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:46,488 INFO L218 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] [2024-11-12 15:52:46,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 15:52:46,692 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 [2024-11-12 15:52:46,693 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)] === [2024-11-12 15:52:46,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2035156323, now seen corresponding path program 1 times [2024-11-12 15:52:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:46,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586167205] [2024-11-12 15:52:46,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:47,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:47,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:47,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586167205] [2024-11-12 15:52:47,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586167205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:47,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041958189] [2024-11-12 15:52:47,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:47,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:52:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:47,282 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) [2024-11-12 15:52:47,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 15:52:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:47,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 15:52:47,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:52:47,519 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:52:47,520 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 [2024-11-12 15:52:47,538 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 [2024-11-12 15:52:47,540 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 [2024-11-12 15:52:47,687 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:47,687 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 [2024-11-12 15:52:47,690 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 [2024-11-12 15:52:47,742 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:47,743 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 [2024-11-12 15:52:47,748 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 [2024-11-12 15:52:47,759 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 [2024-11-12 15:52:47,765 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 [2024-11-12 15:52:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:47,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:52:47,814 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1037 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1037) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1037 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1037) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1038) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-12 15:52:47,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 15:52:47,920 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 [2024-11-12 15:52:48,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041958189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:48,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:52:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2024-11-12 15:52:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234089779] [2024-11-12 15:52:48,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:52:48,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 15:52:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 15:52:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=509, Unknown=13, NotChecked=46, Total=650 [2024-11-12 15:52:48,034 INFO L87 Difference]: Start difference. First operand 610 states and 687 transitions. Second operand has 21 states, 18 states have (on average 6.611111111111111) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 15:52:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:49,294 INFO L93 Difference]: Finished difference Result 612 states and 691 transitions. [2024-11-12 15:52:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 15:52:49,294 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.611111111111111) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2024-11-12 15:52:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:49,298 INFO L225 Difference]: With dead ends: 612 [2024-11-12 15:52:49,298 INFO L226 Difference]: Without dead ends: 612 [2024-11-12 15:52:49,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=783, Unknown=14, NotChecked=58, Total=992 [2024-11-12 15:52:49,299 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 496 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:49,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 2834 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-12 15:52:49,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-12 15:52:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 600. [2024-11-12 15:52:49,313 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) [2024-11-12 15:52:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 676 transitions. [2024-11-12 15:52:49,314 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 676 transitions. Word has length 93 [2024-11-12 15:52:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:49,315 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 676 transitions. [2024-11-12 15:52:49,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.611111111111111) internal successors, (119), 19 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 15:52:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 676 transitions. [2024-11-12 15:52:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-12 15:52:49,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:49,316 INFO L218 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] [2024-11-12 15:52:49,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 15:52:49,516 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 [2024-11-12 15:52:49,518 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)] === [2024-11-12 15:52:49,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1405026382, now seen corresponding path program 1 times [2024-11-12 15:52:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947030306] [2024-11-12 15:52:49,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:49,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:49,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947030306] [2024-11-12 15:52:49,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947030306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:49,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:49,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-12 15:52:49,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699137501] [2024-11-12 15:52:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:49,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 15:52:49,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 15:52:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-12 15:52:49,876 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) [2024-11-12 15:52:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:51,020 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2024-11-12 15:52:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 15:52:51,021 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 [2024-11-12 15:52:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:51,022 INFO L225 Difference]: With dead ends: 616 [2024-11-12 15:52:51,027 INFO L226 Difference]: Without dead ends: 616 [2024-11-12 15:52:51,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-12 15:52:51,028 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 502 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:51,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 3373 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 15:52:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-12 15:52:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 612. [2024-11-12 15:52:51,039 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) [2024-11-12 15:52:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 690 transitions. [2024-11-12 15:52:51,040 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 690 transitions. Word has length 95 [2024-11-12 15:52:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:51,040 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 690 transitions. [2024-11-12 15:52:51,040 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) [2024-11-12 15:52:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 690 transitions. [2024-11-12 15:52:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-12 15:52:51,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:51,041 INFO L218 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] [2024-11-12 15:52:51,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 15:52:51,041 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)] === [2024-11-12 15:52:51,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1405026381, now seen corresponding path program 1 times [2024-11-12 15:52:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:51,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79159163] [2024-11-12 15:52:51,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:51,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:51,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:51,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79159163] [2024-11-12 15:52:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79159163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:51,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:51,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-12 15:52:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038836257] [2024-11-12 15:52:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:51,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 15:52:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:51,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 15:52:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-12 15:52:51,642 INFO L87 Difference]: Start difference. First operand 612 states and 690 transitions. Second operand has 13 states, 12 states have (on average 7.75) 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) [2024-11-12 15:52:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:52,757 INFO L93 Difference]: Finished difference Result 615 states and 694 transitions. [2024-11-12 15:52:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 15:52:52,758 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.75) 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 [2024-11-12 15:52:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:52,760 INFO L225 Difference]: With dead ends: 615 [2024-11-12 15:52:52,760 INFO L226 Difference]: Without dead ends: 615 [2024-11-12 15:52:52,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-12 15:52:52,760 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 483 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:52,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 2480 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 15:52:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-12 15:52:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 612. [2024-11-12 15:52:52,766 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) [2024-11-12 15:52:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 689 transitions. [2024-11-12 15:52:52,767 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 689 transitions. Word has length 95 [2024-11-12 15:52:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:52,767 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 689 transitions. [2024-11-12 15:52:52,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.75) 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) [2024-11-12 15:52:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 689 transitions. [2024-11-12 15:52:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-12 15:52:52,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:52,768 INFO L218 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] [2024-11-12 15:52:52,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 15:52:52,768 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)] === [2024-11-12 15:52:52,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1583080267, now seen corresponding path program 1 times [2024-11-12 15:52:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:52,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461272829] [2024-11-12 15:52:52,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:53,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461272829] [2024-11-12 15:52:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461272829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66580051] [2024-11-12 15:52:53,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:53,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:52:53,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:53,301 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) [2024-11-12 15:52:53,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 15:52:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:53,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-12 15:52:53,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:52:53,692 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:52:53,693 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 [2024-11-12 15:52:53,704 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 [2024-11-12 15:52:53,778 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:53,779 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 [2024-11-12 15:52:53,838 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:53,838 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 [2024-11-12 15:52:53,897 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:53,898 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 [2024-11-12 15:52:53,912 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 [2024-11-12 15:52:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:53,919 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:52:54,135 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2024-11-12 15:52:54,135 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 [2024-11-12 15:52:54,140 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1326 (Array Int Int)) (v_ArrVal_1323 (Array Int Int)) (v_ArrVal_1322 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem51#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1326))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1322)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1323)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-12 15:52:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66580051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:54,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:52:54,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 18 [2024-11-12 15:52:54,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279830574] [2024-11-12 15:52:54,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:52:54,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 15:52:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 15:52:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=397, Unknown=36, NotChecked=42, Total=552 [2024-11-12 15:52:54,143 INFO L87 Difference]: Start difference. First operand 612 states and 689 transitions. Second operand has 19 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 15:52:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:55,174 INFO L93 Difference]: Finished difference Result 614 states and 693 transitions. [2024-11-12 15:52:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 15:52:55,178 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-12 15:52:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:55,179 INFO L225 Difference]: With dead ends: 614 [2024-11-12 15:52:55,179 INFO L226 Difference]: Without dead ends: 614 [2024-11-12 15:52:55,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=796, Unknown=45, NotChecked=60, Total=1056 [2024-11-12 15:52:55,181 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 493 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:55,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 3411 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 15:52:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-12 15:52:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2024-11-12 15:52:55,190 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) [2024-11-12 15:52:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 688 transitions. [2024-11-12 15:52:55,191 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 688 transitions. Word has length 96 [2024-11-12 15:52:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:55,192 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 688 transitions. [2024-11-12 15:52:55,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 15:52:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 688 transitions. [2024-11-12 15:52:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-12 15:52:55,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:55,196 INFO L218 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] [2024-11-12 15:52:55,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 15:52:55,396 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 [2024-11-12 15:52:55,396 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)] === [2024-11-12 15:52:55,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1583080266, now seen corresponding path program 1 times [2024-11-12 15:52:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:55,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685760536] [2024-11-12 15:52:55,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:55,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:55,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:55,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685760536] [2024-11-12 15:52:55,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685760536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:55,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897879530] [2024-11-12 15:52:55,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:55,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:52:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:52:56,000 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) [2024-11-12 15:52:56,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 15:52:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:56,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-12 15:52:56,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:52:56,224 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 [2024-11-12 15:52:56,228 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:52:56,228 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 [2024-11-12 15:52:56,240 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 [2024-11-12 15:52:56,303 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:52:56,303 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 [2024-11-12 15:52:56,337 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-12 15:52:56,337 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 [2024-11-12 15:52:56,341 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 [2024-11-12 15:52:56,430 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-12 15:52:56,430 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 [2024-11-12 15:52:56,434 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 [2024-11-12 15:52:56,436 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 [2024-11-12 15:52:56,466 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 [2024-11-12 15:52:56,468 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 [2024-11-12 15:52:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:56,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:52:56,769 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 891 treesize of output 855 [2024-11-12 15:52:56,778 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 643 treesize of output 635 [2024-11-12 15:52:56,786 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 635 treesize of output 627 [2024-11-12 15:52:56,792 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 627 treesize of output 619 [2024-11-12 15:52:56,798 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 619 treesize of output 611 [2024-11-12 15:52:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897879530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:52:56,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:52:56,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2024-11-12 15:52:56,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284554646] [2024-11-12 15:52:56,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:52:56,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 15:52:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 15:52:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=814, Unknown=5, NotChecked=0, Total=930 [2024-11-12 15:52:56,917 INFO L87 Difference]: Start difference. First operand 611 states and 688 transitions. Second operand has 25 states, 22 states have (on average 5.7727272727272725) 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) [2024-11-12 15:52:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:52:58,403 INFO L93 Difference]: Finished difference Result 613 states and 692 transitions. [2024-11-12 15:52:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 15:52:58,403 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.7727272727272725) 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 [2024-11-12 15:52:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:52:58,405 INFO L225 Difference]: With dead ends: 613 [2024-11-12 15:52:58,405 INFO L226 Difference]: Without dead ends: 613 [2024-11-12 15:52:58,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=1209, Unknown=5, NotChecked=0, Total=1406 [2024-11-12 15:52:58,406 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 495 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-12 15:52:58,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 3381 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-12 15:52:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-12 15:52:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 598. [2024-11-12 15:52:58,412 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) [2024-11-12 15:52:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 674 transitions. [2024-11-12 15:52:58,413 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 674 transitions. Word has length 96 [2024-11-12 15:52:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:52:58,413 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 674 transitions. [2024-11-12 15:52:58,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.7727272727272725) 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) [2024-11-12 15:52:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 674 transitions. [2024-11-12 15:52:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-12 15:52:58,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:52:58,413 INFO L218 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] [2024-11-12 15:52:58,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 15:52:58,617 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 [2024-11-12 15:52:58,618 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)] === [2024-11-12 15:52:58,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:52:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1610945286, now seen corresponding path program 1 times [2024-11-12 15:52:58,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:52:58,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938594742] [2024-11-12 15:52:58,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:52:58,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:52:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:59,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:52:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:52:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:52:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:52:59,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938594742] [2024-11-12 15:52:59,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938594742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:52:59,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:52:59,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-12 15:52:59,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064508599] [2024-11-12 15:52:59,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:52:59,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 15:52:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:52:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 15:52:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-12 15:52:59,174 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) [2024-11-12 15:53:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:00,075 INFO L93 Difference]: Finished difference Result 617 states and 696 transitions. [2024-11-12 15:53:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 15:53:00,076 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 [2024-11-12 15:53:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:00,077 INFO L225 Difference]: With dead ends: 617 [2024-11-12 15:53:00,078 INFO L226 Difference]: Without dead ends: 617 [2024-11-12 15:53:00,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2024-11-12 15:53:00,078 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 507 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:00,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 3091 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 15:53:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-12 15:53:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2024-11-12 15:53:00,087 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) [2024-11-12 15:53:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 691 transitions. [2024-11-12 15:53:00,088 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 691 transitions. Word has length 98 [2024-11-12 15:53:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:00,088 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 691 transitions. [2024-11-12 15:53:00,088 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) [2024-11-12 15:53:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 691 transitions. [2024-11-12 15:53:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-12 15:53:00,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:00,089 INFO L218 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] [2024-11-12 15:53:00,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 15:53:00,089 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)] === [2024-11-12 15:53:00,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:00,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1610945287, now seen corresponding path program 1 times [2024-11-12 15:53:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:00,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125798712] [2024-11-12 15:53:00,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:00,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:00,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:00,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:00,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125798712] [2024-11-12 15:53:00,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125798712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:53:00,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:53:00,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-12 15:53:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891880959] [2024-11-12 15:53:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:53:00,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 15:53:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 15:53:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-12 15:53:00,736 INFO L87 Difference]: Start difference. First operand 613 states and 691 transitions. Second operand has 14 states, 13 states have (on average 7.384615384615385) 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) [2024-11-12 15:53:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:01,723 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2024-11-12 15:53:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 15:53:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.384615384615385) 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 [2024-11-12 15:53:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:01,726 INFO L225 Difference]: With dead ends: 616 [2024-11-12 15:53:01,729 INFO L226 Difference]: Without dead ends: 616 [2024-11-12 15:53:01,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-12 15:53:01,730 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 483 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:01,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 2115 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 15:53:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-12 15:53:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 613. [2024-11-12 15:53:01,738 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) [2024-11-12 15:53:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 690 transitions. [2024-11-12 15:53:01,739 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 690 transitions. Word has length 98 [2024-11-12 15:53:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:01,739 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 690 transitions. [2024-11-12 15:53:01,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.384615384615385) 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) [2024-11-12 15:53:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 690 transitions. [2024-11-12 15:53:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-12 15:53:01,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:01,740 INFO L218 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] [2024-11-12 15:53:01,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 15:53:01,740 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)] === [2024-11-12 15:53:01,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1492267811, now seen corresponding path program 1 times [2024-11-12 15:53:01,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627824389] [2024-11-12 15:53:01,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:02,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627824389] [2024-11-12 15:53:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627824389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845483675] [2024-11-12 15:53:02,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:02,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:53:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:53:02,186 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) [2024-11-12 15:53:02,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 15:53:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:02,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-12 15:53:02,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:53:02,426 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:53:02,427 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 [2024-11-12 15:53:02,431 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 [2024-11-12 15:53:02,474 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:02,475 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 [2024-11-12 15:53:02,506 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:02,506 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 [2024-11-12 15:53:02,539 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:02,539 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 [2024-11-12 15:53:02,571 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:02,571 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 [2024-11-12 15:53:02,578 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 [2024-11-12 15:53:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:02,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:53:02,586 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1788 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1788) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-12 15:53:02,611 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1788 (Array Int Int)) (v_ArrVal_1787 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1787))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-12 15:53:02,614 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1788 (Array Int Int)) (v_ArrVal_1787 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1787))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-12 15:53:02,711 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2024-11-12 15:53:02,712 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 [2024-11-12 15:53:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845483675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:02,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:53:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 20 [2024-11-12 15:53:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367978687] [2024-11-12 15:53:02,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:53:02,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 15:53:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 15:53:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=478, Unknown=39, NotChecked=144, Total=756 [2024-11-12 15:53:02,792 INFO L87 Difference]: Start difference. First operand 613 states and 690 transitions. Second operand has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 15:53:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:03,843 INFO L93 Difference]: Finished difference Result 615 states and 694 transitions. [2024-11-12 15:53:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 15:53:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-12 15:53:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:03,845 INFO L225 Difference]: With dead ends: 615 [2024-11-12 15:53:03,845 INFO L226 Difference]: Without dead ends: 615 [2024-11-12 15:53:03,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=970, Unknown=46, NotChecked=204, Total=1406 [2024-11-12 15:53:03,846 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 475 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:03,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 3069 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 15:53:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-12 15:53:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 612. [2024-11-12 15:53:03,860 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) [2024-11-12 15:53:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 689 transitions. [2024-11-12 15:53:03,860 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 689 transitions. Word has length 99 [2024-11-12 15:53:03,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:03,861 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 689 transitions. [2024-11-12 15:53:03,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 15:53:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 689 transitions. [2024-11-12 15:53:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-12 15:53:03,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:03,861 INFO L218 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] [2024-11-12 15:53:03,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 15:53:04,062 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 [2024-11-12 15:53:04,062 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)] === [2024-11-12 15:53:04,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1492267812, now seen corresponding path program 1 times [2024-11-12 15:53:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255015311] [2024-11-12 15:53:04,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:04,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:04,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:04,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255015311] [2024-11-12 15:53:04,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255015311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142341885] [2024-11-12 15:53:04,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:04,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:53:04,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:53:04,703 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) [2024-11-12 15:53:04,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 15:53:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:04,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-12 15:53:04,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:53:04,948 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 [2024-11-12 15:53:04,953 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:53:04,954 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 [2024-11-12 15:53:04,989 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 [2024-11-12 15:53:04,994 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 [2024-11-12 15:53:05,050 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 [2024-11-12 15:53:05,054 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 [2024-11-12 15:53:05,127 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:05,127 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 [2024-11-12 15:53:05,134 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 [2024-11-12 15:53:05,207 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:05,207 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 [2024-11-12 15:53:05,214 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 [2024-11-12 15:53:05,290 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:05,291 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 [2024-11-12 15:53:05,298 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 [2024-11-12 15:53:05,355 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:05,357 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 62 treesize of output 57 [2024-11-12 15:53:05,360 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 [2024-11-12 15:53:05,371 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 [2024-11-12 15:53:05,375 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 [2024-11-12 15:53:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:05,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:53:05,435 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1960 (Array Int Int))) (<= (+ 24 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1961 (Array Int Int))) (<= 0 (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-12 15:53:05,488 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1959) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1958) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1960 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1958))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1959) .cse1 v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-12 15:53:05,498 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1960 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1958))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1959) .cse1 v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1959) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1958) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20)))))) is different from false [2024-11-12 15:53:05,515 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1957))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1956) .cse0 v_ArrVal_1959) (select (select (store .cse1 .cse0 v_ArrVal_1958) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1961))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1960 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1957))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1958))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1956) .cse3 v_ArrVal_1959) .cse4 v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-12 15:53:05,540 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1957))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1956) .cse1 v_ArrVal_1959) (select (select (store .cse2 .cse1 v_ArrVal_1958) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1961))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1960 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1957))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_1958))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1956) .cse4 v_ArrVal_1959) .cse5 v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_1960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))) is different from false [2024-11-12 15:53:05,596 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1967 (Array Int Int)) (v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1966 (Array Int Int)) (v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1960 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1966))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_1957))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1958))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1967) .cse0 v_ArrVal_1956) .cse1 v_ArrVal_1959) .cse2 v_ArrVal_1961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_1967 (Array Int Int)) (v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1966 (Array Int Int)) (v_ArrVal_1961 (Array Int Int)) (v_ArrVal_1959 (Array Int Int)) (v_ArrVal_1958 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1966))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_1957))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1967) .cse7 v_ArrVal_1956) .cse8 v_ArrVal_1959) (select (select (store .cse9 .cse8 v_ArrVal_1958) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1961))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))))) is different from false [2024-11-12 15:53:05,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142341885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:05,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:53:05,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2024-11-12 15:53:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967069159] [2024-11-12 15:53:05,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:53:05,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 15:53:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 15:53:05,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=650, Unknown=15, NotChecked=342, Total=1122 [2024-11-12 15:53:05,600 INFO L87 Difference]: Start difference. First operand 612 states and 689 transitions. Second operand has 25 states, 22 states have (on average 6.045454545454546) internal successors, (133), 24 states have internal predecessors, (133), 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) [2024-11-12 15:53:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:07,119 INFO L93 Difference]: Finished difference Result 614 states and 693 transitions. [2024-11-12 15:53:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 15:53:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 6.045454545454546) internal successors, (133), 24 states have internal predecessors, (133), 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 99 [2024-11-12 15:53:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:07,122 INFO L225 Difference]: With dead ends: 614 [2024-11-12 15:53:07,122 INFO L226 Difference]: Without dead ends: 614 [2024-11-12 15:53:07,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=1078, Unknown=15, NotChecked=438, Total=1722 [2024-11-12 15:53:07,123 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 477 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:07,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 3180 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-12 15:53:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-12 15:53:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 596. [2024-11-12 15:53:07,136 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) [2024-11-12 15:53:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 672 transitions. [2024-11-12 15:53:07,136 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 672 transitions. Word has length 99 [2024-11-12 15:53:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:07,137 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 672 transitions. [2024-11-12 15:53:07,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 6.045454545454546) internal successors, (133), 24 states have internal predecessors, (133), 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) [2024-11-12 15:53:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 672 transitions. [2024-11-12 15:53:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-12 15:53:07,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:07,139 INFO L218 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] [2024-11-12 15:53:07,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 15:53:07,340 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 [2024-11-12 15:53:07,340 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)] === [2024-11-12 15:53:07,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash -490544312, now seen corresponding path program 1 times [2024-11-12 15:53:07,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328010937] [2024-11-12 15:53:07,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:07,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:07,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328010937] [2024-11-12 15:53:07,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328010937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:53:07,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:53:07,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-12 15:53:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762728331] [2024-11-12 15:53:07,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:53:07,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 15:53:07,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 15:53:07,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-12 15:53:07,858 INFO L87 Difference]: Start difference. First operand 596 states and 672 transitions. Second operand has 15 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 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) [2024-11-12 15:53:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:08,823 INFO L93 Difference]: Finished difference Result 619 states and 698 transitions. [2024-11-12 15:53:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 15:53:08,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 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 [2024-11-12 15:53:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:08,825 INFO L225 Difference]: With dead ends: 619 [2024-11-12 15:53:08,825 INFO L226 Difference]: Without dead ends: 619 [2024-11-12 15:53:08,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-12 15:53:08,825 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 504 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:08,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2774 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 15:53:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-12 15:53:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 615. [2024-11-12 15:53:08,836 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) [2024-11-12 15:53:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 693 transitions. [2024-11-12 15:53:08,837 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 693 transitions. Word has length 102 [2024-11-12 15:53:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:08,838 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 693 transitions. [2024-11-12 15:53:08,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 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) [2024-11-12 15:53:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 693 transitions. [2024-11-12 15:53:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-12 15:53:08,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:08,839 INFO L218 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] [2024-11-12 15:53:08,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 15:53:08,839 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)] === [2024-11-12 15:53:08,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -490544311, now seen corresponding path program 1 times [2024-11-12 15:53:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:08,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006611890] [2024-11-12 15:53:08,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:08,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:09,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006611890] [2024-11-12 15:53:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006611890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:53:09,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:53:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-12 15:53:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13153174] [2024-11-12 15:53:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:53:09,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 15:53:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 15:53:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-12 15:53:09,979 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) [2024-11-12 15:53:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:11,609 INFO L93 Difference]: Finished difference Result 618 states and 697 transitions. [2024-11-12 15:53:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 15:53:11,609 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 [2024-11-12 15:53:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:11,611 INFO L225 Difference]: With dead ends: 618 [2024-11-12 15:53:11,611 INFO L226 Difference]: Without dead ends: 618 [2024-11-12 15:53:11,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-12 15:53:11,612 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 487 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:11,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 3373 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-12 15:53:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-12 15:53:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 615. [2024-11-12 15:53:11,617 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) [2024-11-12 15:53:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 692 transitions. [2024-11-12 15:53:11,618 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 692 transitions. Word has length 102 [2024-11-12 15:53:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:11,619 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 692 transitions. [2024-11-12 15:53:11,620 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) [2024-11-12 15:53:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 692 transitions. [2024-11-12 15:53:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-12 15:53:11,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:11,620 INFO L218 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] [2024-11-12 15:53:11,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-12 15:53:11,620 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)] === [2024-11-12 15:53:11,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1639492837, now seen corresponding path program 1 times [2024-11-12 15:53:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:11,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066008843] [2024-11-12 15:53:11,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:12,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:12,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:12,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066008843] [2024-11-12 15:53:12,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066008843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:12,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962429089] [2024-11-12 15:53:12,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:12,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:53:12,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:53:12,178 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) [2024-11-12 15:53:12,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 15:53:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:12,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-12 15:53:12,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:53:12,451 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:53:12,451 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 [2024-11-12 15:53:12,454 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 [2024-11-12 15:53:12,511 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:12,512 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 [2024-11-12 15:53:12,546 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:12,546 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 [2024-11-12 15:53:12,579 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:12,579 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 [2024-11-12 15:53:12,612 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:12,612 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 [2024-11-12 15:53:12,645 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:12,645 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 [2024-11-12 15:53:12,652 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 [2024-11-12 15:53:12,664 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-12 15:53:12,664 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 [2024-11-12 15:53:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:12,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:53:13,116 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2024-11-12 15:53:13,116 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 [2024-11-12 15:53:13,130 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2308 (Array Int Int)) (v_ArrVal_2304 (Array Int Int)) (v_ArrVal_2303 (Array Int Int)) (v_ArrVal_2302 (Array Int Int)) (v_ArrVal_2301 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem51#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2308))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2301)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2302)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2303)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2304)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-12 15:53:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962429089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:13,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:53:13,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 23 [2024-11-12 15:53:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274298425] [2024-11-12 15:53:13,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:53:13,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 15:53:13,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 15:53:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=932, Unknown=43, NotChecked=64, Total=1190 [2024-11-12 15:53:13,132 INFO L87 Difference]: Start difference. First operand 615 states and 692 transitions. Second operand has 24 states, 22 states have (on average 5.909090909090909) internal successors, (130), 23 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 15:53:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:14,451 INFO L93 Difference]: Finished difference Result 617 states and 696 transitions. [2024-11-12 15:53:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 15:53:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.909090909090909) internal successors, (130), 23 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-12 15:53:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:14,453 INFO L225 Difference]: With dead ends: 617 [2024-11-12 15:53:14,453 INFO L226 Difference]: Without dead ends: 617 [2024-11-12 15:53:14,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=1663, Unknown=43, NotChecked=86, Total=2070 [2024-11-12 15:53:14,454 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 474 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:14,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 3655 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-12 15:53:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-12 15:53:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 614. [2024-11-12 15:53:14,459 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) [2024-11-12 15:53:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 691 transitions. [2024-11-12 15:53:14,459 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 691 transitions. Word has length 103 [2024-11-12 15:53:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:14,460 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 691 transitions. [2024-11-12 15:53:14,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.909090909090909) internal successors, (130), 23 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 15:53:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 691 transitions. [2024-11-12 15:53:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-12 15:53:14,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:14,460 INFO L218 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] [2024-11-12 15:53:14,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 15:53:14,661 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 [2024-11-12 15:53:14,661 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)] === [2024-11-12 15:53:14,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1639492838, now seen corresponding path program 1 times [2024-11-12 15:53:14,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617595360] [2024-11-12 15:53:14,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:15,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:15,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617595360] [2024-11-12 15:53:15,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617595360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079522061] [2024-11-12 15:53:15,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:15,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:53:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:53:15,567 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) [2024-11-12 15:53:15,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 15:53:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:15,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-12 15:53:15,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:53:15,836 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:53:15,836 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 [2024-11-12 15:53:15,839 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 [2024-11-12 15:53:15,845 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 [2024-11-12 15:53:15,848 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 [2024-11-12 15:53:15,880 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 [2024-11-12 15:53:15,882 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 [2024-11-12 15:53:15,987 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:15,988 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 [2024-11-12 15:53:15,992 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 [2024-11-12 15:53:16,054 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:16,054 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 [2024-11-12 15:53:16,057 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 [2024-11-12 15:53:16,110 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:16,111 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 [2024-11-12 15:53:16,115 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 [2024-11-12 15:53:16,171 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:16,171 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 [2024-11-12 15:53:16,175 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 [2024-11-12 15:53:16,261 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-12 15:53:16,261 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 [2024-11-12 15:53:16,270 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 [2024-11-12 15:53:16,284 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 [2024-11-12 15:53:16,288 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 [2024-11-12 15:53:16,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 15:53:16,298 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 [2024-11-12 15:53:16,318 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 15:53:16,318 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 [2024-11-12 15:53:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:16,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:53:17,405 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2490 (Array Int Int)) (v_ArrVal_2489 (Array Int Int)) (v_ArrVal_2496 (Array Int Int)) (v_ArrVal_2494 (Array Int Int)) (v_ArrVal_2493 (Array Int Int)) (v_ArrVal_2492 (Array Int Int)) (v_ArrVal_2491 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2490))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2491))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2489) .cse0 v_ArrVal_2492) .cse1 v_ArrVal_2493) (select (select (store .cse2 .cse1 v_ArrVal_2494) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2496))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0)))) (forall ((v_ArrVal_2490 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int) (v_ArrVal_2489 (Array Int Int)) (v_ArrVal_2496 (Array Int Int)) (v_ArrVal_2495 (Array Int Int)) (v_ArrVal_2494 (Array Int Int)) (v_ArrVal_2493 (Array Int Int)) (v_ArrVal_2492 (Array Int Int)) (v_ArrVal_2491 (Array Int Int))) (or (forall ((v_ArrVal_2497 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2490))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2491))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2494))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2489) .cse5 v_ArrVal_2492) .cse6 v_ArrVal_2493) .cse7 v_ArrVal_2496) |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_2497) (select (select (store .cse8 .cse7 v_ArrVal_2495) |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 [2024-11-12 15:53:17,425 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0))) (forall ((v_ArrVal_2490 (Array Int Int)) (v_ArrVal_2489 (Array Int Int)) (v_ArrVal_2496 (Array Int Int)) (v_ArrVal_2494 (Array Int Int)) (v_ArrVal_2493 (Array Int Int)) (v_ArrVal_2492 (Array Int Int)) (v_ArrVal_2491 (Array Int Int))) (< 0 (+ (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2490))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2491))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2489) .cse1 v_ArrVal_2492) .cse2 v_ArrVal_2493) (select (select (store .cse3 .cse2 v_ArrVal_2494) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2496))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1)))) (forall ((v_ArrVal_2490 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int) (v_ArrVal_2489 (Array Int Int)) (v_ArrVal_2496 (Array Int Int)) (v_ArrVal_2495 (Array Int Int)) (v_ArrVal_2494 (Array Int Int)) (v_ArrVal_2493 (Array Int Int)) (v_ArrVal_2492 (Array Int Int)) (v_ArrVal_2491 (Array Int Int))) (or (forall ((v_ArrVal_2497 Int)) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2490))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_2491))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_2494))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2489) .cse6 v_ArrVal_2492) .cse7 v_ArrVal_2493) .cse8 v_ArrVal_2496) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc58#1.base_7| v_ArrVal_2497) (select (select (store .cse9 .cse8 v_ArrVal_2495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0))))))) is different from false [2024-11-12 15:53:17,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 15:53:17,492 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 [2024-11-12 15:53:22,046 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc58#1.base_7| |c_ULTIMATE.start_main_#t~mem51#1.base|) (forall ((v_ArrVal_2490 (Array Int Int)) (v_ArrVal_2503 (Array Int Int)) (v_ArrVal_2502 (Array Int Int)) (v_ArrVal_2489 (Array Int Int)) (v_ArrVal_2497 Int) (v_ArrVal_2496 (Array Int Int)) (v_ArrVal_2495 (Array Int Int)) (v_ArrVal_2494 (Array Int Int)) (v_ArrVal_2493 (Array Int Int)) (v_ArrVal_2492 (Array Int Int)) (v_ArrVal_2491 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2502))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse0 v_ArrVal_2490))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_2491))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse2 v_ArrVal_2494))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ 3 (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2503) .cse0 v_ArrVal_2489) .cse1 v_ArrVal_2492) .cse2 v_ArrVal_2493) .cse3 v_ArrVal_2496) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc58#1.base_7| v_ArrVal_2497) (select (select (store .cse5 .cse3 v_ArrVal_2495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))))) (forall ((v_prenex_19 (Array Int Int)) (v_prenex_21 (Array Int Int)) (v_prenex_20 (Array Int Int)) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_prenex_18 (Array Int Int)) (v_prenex_16 (Array Int Int))) (< 0 (+ (select (select (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_19))) (let ((.cse9 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse9 v_prenex_16))) (let ((.cse10 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store .cse13 .cse10 v_prenex_25))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_18) .cse9 v_prenex_20) .cse10 v_prenex_24) .cse11 v_prenex_23) (select (select (store .cse12 .cse11 v_prenex_22) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_21))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))))) is different from false [2024-11-12 15:53:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079522061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:53:22,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 15:53:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 25 [2024-11-12 15:53:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947824035] [2024-11-12 15:53:22,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 15:53:22,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 15:53:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 15:53:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1019, Unknown=32, NotChecked=204, Total=1406 [2024-11-12 15:53:22,074 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) [2024-11-12 15:53:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 15:53:49,860 INFO L93 Difference]: Finished difference Result 616 states and 695 transitions. [2024-11-12 15:53:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 15:53:49,860 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 [2024-11-12 15:53:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 15:53:49,862 INFO L225 Difference]: With dead ends: 616 [2024-11-12 15:53:49,862 INFO L226 Difference]: Without dead ends: 616 [2024-11-12 15:53:49,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=289, Invalid=2043, Unknown=32, NotChecked=288, Total=2652 [2024-11-12 15:53:49,863 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 495 mSDsluCounter, 4074 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 5251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2024-11-12 15:53:49,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 4393 Invalid, 5251 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 5233 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2024-11-12 15:53:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-12 15:53:49,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 594. [2024-11-12 15:53:49,867 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) [2024-11-12 15:53:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 670 transitions. [2024-11-12 15:53:49,868 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 670 transitions. Word has length 103 [2024-11-12 15:53:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 15:53:49,868 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 670 transitions. [2024-11-12 15:53:49,868 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) [2024-11-12 15:53:49,868 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 670 transitions. [2024-11-12 15:53:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-12 15:53:49,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 15:53:49,869 INFO L218 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] [2024-11-12 15:53:49,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 15:53:50,073 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 [2024-11-12 15:53:50,074 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)] === [2024-11-12 15:53:50,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:53:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1968749023, now seen corresponding path program 1 times [2024-11-12 15:53:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:53:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801568267] [2024-11-12 15:53:50,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:53:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:53:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:51,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-12 15:53:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:53:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:53:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:53:51,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801568267] [2024-11-12 15:53:51,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801568267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:53:51,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:53:51,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-12 15:53:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379703912] [2024-11-12 15:53:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:53:51,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 15:53:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:53:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 15:53:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-12 15:53:51,595 INFO L87 Difference]: Start difference. First operand 594 states and 670 transitions. Second operand has 16 states, 15 states have (on average 6.866666666666666) 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)