./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:31:38,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:31:38,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:31:38,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:31:38,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:31:38,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:31:38,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:31:38,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:31:38,871 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:31:38,871 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:31:38,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:31:38,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:31:38,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:31:38,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:31:38,872 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:31:38,873 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:31:38,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:31:38,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:31:38,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:31:38,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:31:38,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:31:38,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:31:38,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:31:38,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:31:38,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:31:38,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:31:38,877 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2025-01-10 00:31:39,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:31:39,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:31:39,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:31:39,196 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:31:39,197 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:31:39,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2025-01-10 00:31:40,547 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9eb60cb03/3e61a456177540a4a97a133e0404b223/FLAG5eba795bb [2025-01-10 00:31:40,932 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:31:40,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2025-01-10 00:31:40,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9eb60cb03/3e61a456177540a4a97a133e0404b223/FLAG5eba795bb [2025-01-10 00:31:40,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9eb60cb03/3e61a456177540a4a97a133e0404b223 [2025-01-10 00:31:40,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:31:40,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:31:40,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:31:40,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:31:40,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:31:40,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:31:40" (1/1) ... [2025-01-10 00:31:40,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f12236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:40, skipping insertion in model container [2025-01-10 00:31:40,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:31:40" (1/1) ... [2025-01-10 00:31:41,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:31:41,349 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:31:41,386 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:31:41,393 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:31:41,396 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:31:41,405 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:31:41,419 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:31:41,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:31:41,436 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:31:41,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:31:41,555 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:31:41,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41 WrapperNode [2025-01-10 00:31:41,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:31:41,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:31:41,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:31:41,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:31:41,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,619 INFO L138 Inliner]: procedures = 176, calls = 180, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 823 [2025-01-10 00:31:41,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:31:41,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:31:41,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:31:41,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:31:41,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,696 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]. [2025-01-10 00:31:41,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,721 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:31:41,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:31:41,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:31:41,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:31:41,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (1/1) ... [2025-01-10 00:31:41,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:31:41,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:31:41,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:31:41,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:31:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 00:31:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 00:31:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-10 00:31:41,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-10 00:31:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 00:31:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-10 00:31:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-10 00:31:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 00:31:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:31:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:31:41,965 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:31:41,966 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:31:41,969 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:31:42,004 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:31:43,458 INFO L? ?]: Removed 775 outVars from TransFormulas that were not future-live. [2025-01-10 00:31:43,459 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:31:43,499 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:31:43,499 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2025-01-10 00:31:43,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:43 BoogieIcfgContainer [2025-01-10 00:31:43,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:31:43,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:31:43,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:31:43,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:31:43,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:31:40" (1/3) ... [2025-01-10 00:31:43,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4011db4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:31:43, skipping insertion in model container [2025-01-10 00:31:43,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:41" (2/3) ... [2025-01-10 00:31:43,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4011db4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:31:43, skipping insertion in model container [2025-01-10 00:31:43,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:43" (3/3) ... [2025-01-10 00:31:43,507 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2025-01-10 00:31:43,517 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:31:43,519 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test1-1.i that has 4 procedures, 759 locations, 1 initial locations, 20 loop locations, and 320 error locations. [2025-01-10 00:31:43,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:31:43,580 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;@5397c426, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:31:43,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 320 error locations. [2025-01-10 00:31:43,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 754 states, 421 states have (on average 2.0617577197149646) internal successors, (868), 748 states have internal predecessors, (868), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:31:43,592 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:43,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:31:43,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr318ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:43,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 47111060, now seen corresponding path program 1 times [2025-01-10 00:31:43,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:43,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676428536] [2025-01-10 00:31:43,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:43,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:31:43,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:31:43,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:43,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:43,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:43,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676428536] [2025-01-10 00:31:43,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676428536] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:43,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:43,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:31:43,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622078410] [2025-01-10 00:31:43,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:43,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:31:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:43,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:31:43,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:31:43,788 INFO L87 Difference]: Start difference. First operand has 754 states, 421 states have (on average 2.0617577197149646) internal successors, (868), 748 states have internal predecessors, (868), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2025-01-10 00:31:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:43,935 INFO L93 Difference]: Finished difference Result 1436 states and 1630 transitions. [2025-01-10 00:31:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:31:43,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2025-01-10 00:31:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:43,963 INFO L225 Difference]: With dead ends: 1436 [2025-01-10 00:31:43,964 INFO L226 Difference]: Without dead ends: 1434 [2025-01-10 00:31:43,966 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 [2025-01-10 00:31:43,968 INFO L435 NwaCegarLoop]: 1095 mSDtfsCounter, 772 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:43,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1939 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:31:43,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2025-01-10 00:31:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 743. [2025-01-10 00:31:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 416 states have (on average 1.9807692307692308) internal successors, (824), 737 states have internal predecessors, (824), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 850 transitions. [2025-01-10 00:31:44,069 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 850 transitions. Word has length 5 [2025-01-10 00:31:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:44,069 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 850 transitions. [2025-01-10 00:31:44,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2025-01-10 00:31:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 850 transitions. [2025-01-10 00:31:44,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:31:44,070 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:44,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:31:44,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:31:44,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:44,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 45872344, now seen corresponding path program 1 times [2025-01-10 00:31:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251461534] [2025-01-10 00:31:44,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:44,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:31:44,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:31:44,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:44,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:44,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:44,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251461534] [2025-01-10 00:31:44,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251461534] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:44,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:44,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:31:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796214396] [2025-01-10 00:31:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:44,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:31:44,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:44,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:31:44,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:31:44,153 INFO L87 Difference]: Start difference. First operand 743 states and 850 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) [2025-01-10 00:31:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:44,692 INFO L93 Difference]: Finished difference Result 694 states and 801 transitions. [2025-01-10 00:31:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:31:44,692 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 [2025-01-10 00:31:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:44,696 INFO L225 Difference]: With dead ends: 694 [2025-01-10 00:31:44,696 INFO L226 Difference]: Without dead ends: 694 [2025-01-10 00:31:44,696 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 [2025-01-10 00:31:44,697 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 694 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:44,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 499 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:31:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-01-10 00:31:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2025-01-10 00:31:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 416 states have (on average 1.8629807692307692) internal successors, (775), 688 states have internal predecessors, (775), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 801 transitions. [2025-01-10 00:31:44,729 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 801 transitions. Word has length 5 [2025-01-10 00:31:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:44,729 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 801 transitions. [2025-01-10 00:31:44,729 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) [2025-01-10 00:31:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 801 transitions. [2025-01-10 00:31:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-10 00:31:44,730 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:44,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:31:44,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 00:31:44,730 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:44,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:44,730 INFO L85 PathProgramCache]: Analyzing trace with hash 45872345, now seen corresponding path program 1 times [2025-01-10 00:31:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145721908] [2025-01-10 00:31:44,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:44,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:44,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:31:44,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:31:44,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:44,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:44,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145721908] [2025-01-10 00:31:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145721908] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:31:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483694003] [2025-01-10 00:31:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:44,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:31:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:44,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:31:44,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:31:44,822 INFO L87 Difference]: Start difference. First operand 694 states and 801 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) [2025-01-10 00:31:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:45,296 INFO L93 Difference]: Finished difference Result 771 states and 884 transitions. [2025-01-10 00:31:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:31:45,296 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 [2025-01-10 00:31:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:45,300 INFO L225 Difference]: With dead ends: 771 [2025-01-10 00:31:45,301 INFO L226 Difference]: Without dead ends: 771 [2025-01-10 00:31:45,301 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 [2025-01-10 00:31:45,304 INFO L435 NwaCegarLoop]: 670 mSDtfsCounter, 410 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:45,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 904 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 00:31:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2025-01-10 00:31:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 724. [2025-01-10 00:31:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 456 states have (on average 1.8508771929824561) internal successors, (844), 718 states have internal predecessors, (844), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 870 transitions. [2025-01-10 00:31:45,329 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 870 transitions. Word has length 5 [2025-01-10 00:31:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:45,330 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 870 transitions. [2025-01-10 00:31:45,330 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) [2025-01-10 00:31:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 870 transitions. [2025-01-10 00:31:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 00:31:45,330 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:45,331 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:31:45,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 00:31:45,331 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:45,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -459415550, now seen corresponding path program 1 times [2025-01-10 00:31:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:45,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147292779] [2025-01-10 00:31:45,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:45,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:31:45,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:31:45,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:45,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:45,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:45,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147292779] [2025-01-10 00:31:45,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147292779] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:45,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:45,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:31:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724868402] [2025-01-10 00:31:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:45,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:31:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:45,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:31:45,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:31:45,434 INFO L87 Difference]: Start difference. First operand 724 states and 870 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-01-10 00:31:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:46,007 INFO L93 Difference]: Finished difference Result 750 states and 923 transitions. [2025-01-10 00:31:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:31:46,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2025-01-10 00:31:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:46,011 INFO L225 Difference]: With dead ends: 750 [2025-01-10 00:31:46,011 INFO L226 Difference]: Without dead ends: 750 [2025-01-10 00:31:46,012 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 [2025-01-10 00:31:46,012 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 961 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:46,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 783 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:31:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2025-01-10 00:31:46,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 701. [2025-01-10 00:31:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 456 states have (on average 1.8004385964912282) internal successors, (821), 695 states have internal predecessors, (821), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 847 transitions. [2025-01-10 00:31:46,044 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 847 transitions. Word has length 11 [2025-01-10 00:31:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:46,046 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 847 transitions. [2025-01-10 00:31:46,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-01-10 00:31:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 847 transitions. [2025-01-10 00:31:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 00:31:46,046 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:46,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:31:46,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 00:31:46,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:46,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -459415549, now seen corresponding path program 1 times [2025-01-10 00:31:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:46,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861613220] [2025-01-10 00:31:46,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:46,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:31:46,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:31:46,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:46,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:46,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861613220] [2025-01-10 00:31:46,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861613220] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:46,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:31:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263256872] [2025-01-10 00:31:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:46,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:31:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:46,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:31:46,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:31:46,164 INFO L87 Difference]: Start difference. First operand 701 states and 847 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-01-10 00:31:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:46,188 INFO L93 Difference]: Finished difference Result 626 states and 744 transitions. [2025-01-10 00:31:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:31:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-01-10 00:31:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:46,193 INFO L225 Difference]: With dead ends: 626 [2025-01-10 00:31:46,195 INFO L226 Difference]: Without dead ends: 626 [2025-01-10 00:31:46,196 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 [2025-01-10 00:31:46,196 INFO L435 NwaCegarLoop]: 653 mSDtfsCounter, 60 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:46,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1253 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:31:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2025-01-10 00:31:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2025-01-10 00:31:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 393 states have (on average 1.826972010178117) internal successors, (718), 620 states have internal predecessors, (718), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 744 transitions. [2025-01-10 00:31:46,211 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 744 transitions. Word has length 11 [2025-01-10 00:31:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:46,212 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 744 transitions. [2025-01-10 00:31:46,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-01-10 00:31:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 744 transitions. [2025-01-10 00:31:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-10 00:31:46,212 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:46,213 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:31:46,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 00:31:46,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:46,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:46,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1356764593, now seen corresponding path program 1 times [2025-01-10 00:31:46,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:46,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786590038] [2025-01-10 00:31:46,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:46,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:46,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 00:31:46,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 00:31:46,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:46,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786590038] [2025-01-10 00:31:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786590038] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:46,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:31:46,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683460222] [2025-01-10 00:31:46,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:46,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:31:46,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:46,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:31:46,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:31:46,285 INFO L87 Difference]: Start difference. First operand 626 states and 744 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-01-10 00:31:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:46,341 INFO L93 Difference]: Finished difference Result 608 states and 719 transitions. [2025-01-10 00:31:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:31:46,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-01-10 00:31:46,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:46,344 INFO L225 Difference]: With dead ends: 608 [2025-01-10 00:31:46,344 INFO L226 Difference]: Without dead ends: 608 [2025-01-10 00:31:46,345 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 [2025-01-10 00:31:46,345 INFO L435 NwaCegarLoop]: 618 mSDtfsCounter, 41 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:46,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1826 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:31:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2025-01-10 00:31:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2025-01-10 00:31:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 379 states have (on average 1.8205804749340369) internal successors, (690), 599 states have internal predecessors, (690), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 716 transitions. [2025-01-10 00:31:46,359 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 716 transitions. Word has length 12 [2025-01-10 00:31:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:46,359 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 716 transitions. [2025-01-10 00:31:46,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-01-10 00:31:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 716 transitions. [2025-01-10 00:31:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-10 00:31:46,360 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:46,360 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] [2025-01-10 00:31:46,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 00:31:46,360 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:46,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash -438990787, now seen corresponding path program 1 times [2025-01-10 00:31:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:46,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674943536] [2025-01-10 00:31:46,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:46,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 00:31:46,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 00:31:46,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:46,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674943536] [2025-01-10 00:31:46,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674943536] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:46,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:46,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:31:46,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628791368] [2025-01-10 00:31:46,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:46,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:31:46,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:46,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:31:46,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:31:46,544 INFO L87 Difference]: Start difference. First operand 605 states and 716 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-01-10 00:31:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:47,029 INFO L93 Difference]: Finished difference Result 697 states and 802 transitions. [2025-01-10 00:31:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:31:47,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2025-01-10 00:31:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:47,032 INFO L225 Difference]: With dead ends: 697 [2025-01-10 00:31:47,032 INFO L226 Difference]: Without dead ends: 697 [2025-01-10 00:31:47,032 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 [2025-01-10 00:31:47,033 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 415 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:47,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1126 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-10 00:31:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-01-10 00:31:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 601. [2025-01-10 00:31:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 379 states have (on average 1.8100263852242744) internal successors, (686), 595 states have internal predecessors, (686), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 712 transitions. [2025-01-10 00:31:47,047 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 712 transitions. Word has length 26 [2025-01-10 00:31:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:47,047 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 712 transitions. [2025-01-10 00:31:47,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-01-10 00:31:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 712 transitions. [2025-01-10 00:31:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-10 00:31:47,050 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:47,051 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] [2025-01-10 00:31:47,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 00:31:47,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:47,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash -54962925, now seen corresponding path program 1 times [2025-01-10 00:31:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:47,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78103434] [2025-01-10 00:31:47,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:47,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-10 00:31:47,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-10 00:31:47,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:47,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:47,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:47,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78103434] [2025-01-10 00:31:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78103434] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:47,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:31:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483474924] [2025-01-10 00:31:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:47,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:31:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:47,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:31:47,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:31:47,196 INFO L87 Difference]: Start difference. First operand 601 states and 712 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-01-10 00:31:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:47,247 INFO L93 Difference]: Finished difference Result 601 states and 708 transitions. [2025-01-10 00:31:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:31:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2025-01-10 00:31:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:47,251 INFO L225 Difference]: With dead ends: 601 [2025-01-10 00:31:47,251 INFO L226 Difference]: Without dead ends: 601 [2025-01-10 00:31:47,251 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 [2025-01-10 00:31:47,252 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 21 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:47,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1808 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:31:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-01-10 00:31:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2025-01-10 00:31:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 379 states have (on average 1.799472295514512) internal successors, (682), 595 states have internal predecessors, (682), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 708 transitions. [2025-01-10 00:31:47,267 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 708 transitions. Word has length 60 [2025-01-10 00:31:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:47,267 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 708 transitions. [2025-01-10 00:31:47,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-01-10 00:31:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 708 transitions. [2025-01-10 00:31:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-10 00:31:47,268 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:47,268 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] [2025-01-10 00:31:47,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 00:31:47,269 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:47,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash 578689375, now seen corresponding path program 1 times [2025-01-10 00:31:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184463072] [2025-01-10 00:31:47,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:47,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:47,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-10 00:31:47,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-10 00:31:47,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:47,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:47,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184463072] [2025-01-10 00:31:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184463072] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:47,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:31:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97788201] [2025-01-10 00:31:47,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:47,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:31:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:47,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:31:47,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:31:47,422 INFO L87 Difference]: Start difference. First operand 601 states and 708 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-01-10 00:31:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:47,462 INFO L93 Difference]: Finished difference Result 692 states and 826 transitions. [2025-01-10 00:31:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:31:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2025-01-10 00:31:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:47,466 INFO L225 Difference]: With dead ends: 692 [2025-01-10 00:31:47,466 INFO L226 Difference]: Without dead ends: 692 [2025-01-10 00:31:47,466 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 [2025-01-10 00:31:47,467 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 54 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1226 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 [2025-01-10 00:31:47,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1226 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:31:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-01-10 00:31:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2025-01-10 00:31:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 470 states have (on average 1.702127659574468) internal successors, (800), 686 states have internal predecessors, (800), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 826 transitions. [2025-01-10 00:31:47,483 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 826 transitions. Word has length 68 [2025-01-10 00:31:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:47,483 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 826 transitions. [2025-01-10 00:31:47,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-01-10 00:31:47,484 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 826 transitions. [2025-01-10 00:31:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-10 00:31:47,484 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:47,485 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] [2025-01-10 00:31:47,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 00:31:47,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:47,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:47,486 INFO L85 PathProgramCache]: Analyzing trace with hash -372619202, now seen corresponding path program 1 times [2025-01-10 00:31:47,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:47,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401891217] [2025-01-10 00:31:47,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:47,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:47,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-10 00:31:47,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-10 00:31:47,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:47,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:48,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:48,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401891217] [2025-01-10 00:31:48,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401891217] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:48,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:48,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:31:48,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759294760] [2025-01-10 00:31:48,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:48,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:31:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:48,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:31:48,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:31:48,076 INFO L87 Difference]: Start difference. First operand 692 states and 826 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-01-10 00:31:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:48,656 INFO L93 Difference]: Finished difference Result 654 states and 788 transitions. [2025-01-10 00:31:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:31:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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 71 [2025-01-10 00:31:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:48,660 INFO L225 Difference]: With dead ends: 654 [2025-01-10 00:31:48,660 INFO L226 Difference]: Without dead ends: 654 [2025-01-10 00:31:48,660 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 [2025-01-10 00:31:48,661 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 926 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:48,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 531 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-10 00:31:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2025-01-10 00:31:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 614. [2025-01-10 00:31:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 430 states have (on average 1.5883720930232559) internal successors, (683), 608 states have internal predecessors, (683), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 709 transitions. [2025-01-10 00:31:48,680 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 709 transitions. Word has length 71 [2025-01-10 00:31:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:48,680 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 709 transitions. [2025-01-10 00:31:48,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-01-10 00:31:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 709 transitions. [2025-01-10 00:31:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-10 00:31:48,683 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:48,683 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] [2025-01-10 00:31:48,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 00:31:48,683 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:48,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 176630386, now seen corresponding path program 1 times [2025-01-10 00:31:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:48,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225098525] [2025-01-10 00:31:48,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:48,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-01-10 00:31:48,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-01-10 00:31:48,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:48,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225098525] [2025-01-10 00:31:48,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225098525] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:48,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:48,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:31:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706361921] [2025-01-10 00:31:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:48,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:31:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:48,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:31:48,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:31:48,948 INFO L87 Difference]: Start difference. First operand 614 states and 709 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 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) [2025-01-10 00:31:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:49,458 INFO L93 Difference]: Finished difference Result 613 states and 708 transitions. [2025-01-10 00:31:49,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:31:49,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 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 [2025-01-10 00:31:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:49,461 INFO L225 Difference]: With dead ends: 613 [2025-01-10 00:31:49,461 INFO L226 Difference]: Without dead ends: 613 [2025-01-10 00:31:49,461 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 [2025-01-10 00:31:49,462 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 2 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:49,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1653 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:31:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2025-01-10 00:31:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2025-01-10 00:31:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 430 states have (on average 1.586046511627907) internal successors, (682), 607 states have internal predecessors, (682), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 708 transitions. [2025-01-10 00:31:49,476 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 708 transitions. Word has length 76 [2025-01-10 00:31:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:49,477 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 708 transitions. [2025-01-10 00:31:49,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 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) [2025-01-10 00:31:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 708 transitions. [2025-01-10 00:31:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-10 00:31:49,478 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:49,479 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] [2025-01-10 00:31:49,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 00:31:49,479 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:49,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash 176630387, now seen corresponding path program 1 times [2025-01-10 00:31:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:49,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828576672] [2025-01-10 00:31:49,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:49,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-01-10 00:31:49,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-01-10 00:31:49,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:49,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:49,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828576672] [2025-01-10 00:31:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828576672] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:49,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:49,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:31:49,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983799788] [2025-01-10 00:31:49,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:49,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:31:49,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:49,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:31:49,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:31:49,950 INFO L87 Difference]: Start difference. First operand 613 states and 708 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 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) [2025-01-10 00:31:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:50,501 INFO L93 Difference]: Finished difference Result 612 states and 707 transitions. [2025-01-10 00:31:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:31:50,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 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 [2025-01-10 00:31:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:50,504 INFO L225 Difference]: With dead ends: 612 [2025-01-10 00:31:50,504 INFO L226 Difference]: Without dead ends: 612 [2025-01-10 00:31:50,504 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 [2025-01-10 00:31:50,504 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 1 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:50,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1660 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:31:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2025-01-10 00:31:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2025-01-10 00:31:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 429 states have (on average 1.5874125874125875) internal successors, (681), 606 states have internal predecessors, (681), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 707 transitions. [2025-01-10 00:31:50,526 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 707 transitions. Word has length 76 [2025-01-10 00:31:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:50,526 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 707 transitions. [2025-01-10 00:31:50,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 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) [2025-01-10 00:31:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 707 transitions. [2025-01-10 00:31:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-10 00:31:50,529 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:50,529 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] [2025-01-10 00:31:50,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 00:31:50,529 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:50,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1340960985, now seen corresponding path program 1 times [2025-01-10 00:31:50,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976983478] [2025-01-10 00:31:50,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:50,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:50,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-10 00:31:50,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-10 00:31:50,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:50,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:50,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:50,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976983478] [2025-01-10 00:31:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976983478] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:50,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:50,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:31:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151831893] [2025-01-10 00:31:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:50,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:31:50,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:50,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:31:50,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:31:50,757 INFO L87 Difference]: Start difference. First operand 612 states and 707 transitions. Second operand has 7 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 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) [2025-01-10 00:31:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:51,507 INFO L93 Difference]: Finished difference Result 624 states and 722 transitions. [2025-01-10 00:31:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:31:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 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 84 [2025-01-10 00:31:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:51,510 INFO L225 Difference]: With dead ends: 624 [2025-01-10 00:31:51,510 INFO L226 Difference]: Without dead ends: 624 [2025-01-10 00:31:51,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:31:51,511 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 12 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:51,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2471 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-10 00:31:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2025-01-10 00:31:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 618. [2025-01-10 00:31:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 434 states have (on average 1.5852534562211982) internal successors, (688), 611 states have internal predecessors, (688), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-01-10 00:31:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 717 transitions. [2025-01-10 00:31:51,522 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 717 transitions. Word has length 84 [2025-01-10 00:31:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:51,522 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 717 transitions. [2025-01-10 00:31:51,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 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) [2025-01-10 00:31:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 717 transitions. [2025-01-10 00:31:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-10 00:31:51,523 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:51,523 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] [2025-01-10 00:31:51,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 00:31:51,524 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:51,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1340960986, now seen corresponding path program 1 times [2025-01-10 00:31:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327174228] [2025-01-10 00:31:51,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:51,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:51,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-10 00:31:51,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-10 00:31:51,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:51,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327174228] [2025-01-10 00:31:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327174228] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:31:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284063643] [2025-01-10 00:31:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:31:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:52,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:31:52,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:31:52,001 INFO L87 Difference]: Start difference. First operand 618 states and 717 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 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) [2025-01-10 00:31:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:52,724 INFO L93 Difference]: Finished difference Result 618 states and 716 transitions. [2025-01-10 00:31:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:31:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 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 84 [2025-01-10 00:31:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:52,727 INFO L225 Difference]: With dead ends: 618 [2025-01-10 00:31:52,727 INFO L226 Difference]: Without dead ends: 618 [2025-01-10 00:31:52,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:31:52,727 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 7 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:52,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2052 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-10 00:31:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2025-01-10 00:31:52,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2025-01-10 00:31:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 434 states have (on average 1.5829493087557605) internal successors, (687), 611 states have internal predecessors, (687), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-01-10 00:31:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 716 transitions. [2025-01-10 00:31:52,740 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 716 transitions. Word has length 84 [2025-01-10 00:31:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:52,741 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 716 transitions. [2025-01-10 00:31:52,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 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) [2025-01-10 00:31:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 716 transitions. [2025-01-10 00:31:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-01-10 00:31:52,742 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:52,742 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] [2025-01-10 00:31:52,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-10 00:31:52,742 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:52,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -126904384, now seen corresponding path program 1 times [2025-01-10 00:31:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995557887] [2025-01-10 00:31:52,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:52,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:52,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-01-10 00:31:52,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-01-10 00:31:52,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:52,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:53,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:53,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995557887] [2025-01-10 00:31:53,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995557887] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:31:53,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878559212] [2025-01-10 00:31:53,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:53,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:31:53,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:31:53,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:31:53,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:31:53,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-01-10 00:31:53,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-01-10 00:31:53,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:53,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:53,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-10 00:31:53,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:31:53,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:31:53,584 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:31:53,585 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 [2025-01-10 00:31:53,600 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 [2025-01-10 00:31:53,673 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:31:53,674 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 [2025-01-10 00:31:53,710 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 [2025-01-10 00:31:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:53,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:31:53,763 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2025-01-10 00:31:53,763 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 [2025-01-10 00:31:53,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878559212] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:31:53,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:31:53,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2025-01-10 00:31:53,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498860001] [2025-01-10 00:31:53,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:31:53,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 00:31:53,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:53,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 00:31:53,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=168, Unknown=7, NotChecked=0, Total=210 [2025-01-10 00:31:53,814 INFO L87 Difference]: Start difference. First operand 618 states and 716 transitions. Second operand has 14 states, 12 states have (on average 10.083333333333334) internal successors, (121), 13 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:31:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:55,130 INFO L93 Difference]: Finished difference Result 617 states and 715 transitions. [2025-01-10 00:31:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 00:31:55,130 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.083333333333334) internal successors, (121), 13 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2025-01-10 00:31:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:55,132 INFO L225 Difference]: With dead ends: 617 [2025-01-10 00:31:55,133 INFO L226 Difference]: Without dead ends: 617 [2025-01-10 00:31:55,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=371, Unknown=7, NotChecked=0, Total=462 [2025-01-10 00:31:55,133 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 500 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:55,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 2617 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-10 00:31:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2025-01-10 00:31:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2025-01-10 00:31:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 434 states have (on average 1.5806451612903225) internal successors, (686), 610 states have internal predecessors, (686), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-01-10 00:31:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 715 transitions. [2025-01-10 00:31:55,145 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 715 transitions. Word has length 85 [2025-01-10 00:31:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:55,146 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 715 transitions. [2025-01-10 00:31:55,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.083333333333334) internal successors, (121), 13 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:31:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 715 transitions. [2025-01-10 00:31:55,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-01-10 00:31:55,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:55,147 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] [2025-01-10 00:31:55,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 00:31:55,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-10 00:31:55,348 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:55,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -126904383, now seen corresponding path program 1 times [2025-01-10 00:31:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52321304] [2025-01-10 00:31:55,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:55,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-01-10 00:31:55,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-01-10 00:31:55,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:55,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:55,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52321304] [2025-01-10 00:31:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52321304] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:31:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342572802] [2025-01-10 00:31:55,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:55,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:31:55,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:31:55,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:31:55,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:31:56,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-01-10 00:31:56,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-01-10 00:31:56,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:56,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:56,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-10 00:31:56,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:31:56,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:31:56,300 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:31:56,300 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 [2025-01-10 00:31:56,309 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 [2025-01-10 00:31:56,335 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 [2025-01-10 00:31:56,340 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 [2025-01-10 00:31:56,430 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 [2025-01-10 00:31:56,436 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 [2025-01-10 00:31:56,561 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:31:56,561 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 [2025-01-10 00:31:56,568 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 [2025-01-10 00:31:56,618 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 [2025-01-10 00:31:56,624 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 [2025-01-10 00:31:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:56,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:31:56,752 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_630 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_630) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_630 (Array Int Int)) (v_ArrVal_631 (Array Int Int))) (<= (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_630) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_631) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-01-10 00:31:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342572802] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:31:56,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:31:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2025-01-10 00:31:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54490368] [2025-01-10 00:31:56,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:31:56,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 00:31:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:56,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 00:31:56,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=324, Unknown=1, NotChecked=36, Total=420 [2025-01-10 00:31:56,757 INFO L87 Difference]: Start difference. First operand 617 states and 715 transitions. Second operand has 18 states, 15 states have (on average 8.866666666666667) internal successors, (133), 18 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) [2025-01-10 00:31:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:31:58,604 INFO L93 Difference]: Finished difference Result 624 states and 722 transitions. [2025-01-10 00:31:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:31:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 8.866666666666667) internal successors, (133), 18 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 85 [2025-01-10 00:31:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:31:58,607 INFO L225 Difference]: With dead ends: 624 [2025-01-10 00:31:58,607 INFO L226 Difference]: Without dead ends: 624 [2025-01-10 00:31:58,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=463, Unknown=1, NotChecked=44, Total=600 [2025-01-10 00:31:58,608 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 494 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:31:58,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2837 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2991 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-10 00:31:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2025-01-10 00:31:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 615. [2025-01-10 00:31:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 433 states have (on average 1.579676674364896) internal successors, (684), 608 states have internal predecessors, (684), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:31:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 710 transitions. [2025-01-10 00:31:58,624 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 710 transitions. Word has length 85 [2025-01-10 00:31:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:31:58,624 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 710 transitions. [2025-01-10 00:31:58,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 8.866666666666667) internal successors, (133), 18 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) [2025-01-10 00:31:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 710 transitions. [2025-01-10 00:31:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-10 00:31:58,625 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:31:58,625 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] [2025-01-10 00:31:58,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:31:58,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-10 00:31:58,826 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:31:58,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:31:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1078482853, now seen corresponding path program 1 times [2025-01-10 00:31:58,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:31:58,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457363864] [2025-01-10 00:31:58,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:31:58,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:31:58,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-10 00:31:58,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-10 00:31:58,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:31:58,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:31:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:31:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:31:59,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457363864] [2025-01-10 00:31:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457363864] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:31:59,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:31:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-01-10 00:31:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890251532] [2025-01-10 00:31:59,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:31:59,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 00:31:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:31:59,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 00:31:59,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-01-10 00:31:59,309 INFO L87 Difference]: Start difference. First operand 615 states and 710 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 13 states have internal predecessors, (85), 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) [2025-01-10 00:32:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:00,567 INFO L93 Difference]: Finished difference Result 628 states and 726 transitions. [2025-01-10 00:32:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 00:32:00,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 13 states have internal predecessors, (85), 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 87 [2025-01-10 00:32:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:00,570 INFO L225 Difference]: With dead ends: 628 [2025-01-10 00:32:00,570 INFO L226 Difference]: Without dead ends: 628 [2025-01-10 00:32:00,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-01-10 00:32:00,571 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 524 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:00,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 3223 Invalid, 2594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2570 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:32:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2025-01-10 00:32:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 624. [2025-01-10 00:32:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 441 states have (on average 1.5736961451247165) internal successors, (694), 616 states have internal predecessors, (694), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 721 transitions. [2025-01-10 00:32:00,583 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 721 transitions. Word has length 87 [2025-01-10 00:32:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:00,583 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 721 transitions. [2025-01-10 00:32:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 13 states have internal predecessors, (85), 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) [2025-01-10 00:32:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 721 transitions. [2025-01-10 00:32:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-10 00:32:00,584 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:00,584 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] [2025-01-10 00:32:00,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-10 00:32:00,584 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:00,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1078482854, now seen corresponding path program 1 times [2025-01-10 00:32:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764621247] [2025-01-10 00:32:00,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:00,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-10 00:32:00,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-10 00:32:00,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:00,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:01,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764621247] [2025-01-10 00:32:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764621247] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:01,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 00:32:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915389300] [2025-01-10 00:32:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:01,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 00:32:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:01,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 00:32:01,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:32:01,166 INFO L87 Difference]: Start difference. First operand 624 states and 721 transitions. Second operand has 11 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 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) [2025-01-10 00:32:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:02,312 INFO L93 Difference]: Finished difference Result 627 states and 725 transitions. [2025-01-10 00:32:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 00:32:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 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 87 [2025-01-10 00:32:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:02,315 INFO L225 Difference]: With dead ends: 627 [2025-01-10 00:32:02,315 INFO L226 Difference]: Without dead ends: 627 [2025-01-10 00:32:02,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-01-10 00:32:02,315 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 499 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:02,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2266 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:32:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2025-01-10 00:32:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 624. [2025-01-10 00:32:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 441 states have (on average 1.5714285714285714) internal successors, (693), 616 states have internal predecessors, (693), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 720 transitions. [2025-01-10 00:32:02,326 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 720 transitions. Word has length 87 [2025-01-10 00:32:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:02,326 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 720 transitions. [2025-01-10 00:32:02,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.5) internal successors, (85), 11 states have internal predecessors, (85), 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) [2025-01-10 00:32:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 720 transitions. [2025-01-10 00:32:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-10 00:32:02,327 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:02,327 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] [2025-01-10 00:32:02,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-10 00:32:02,327 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:02,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1036684450, now seen corresponding path program 1 times [2025-01-10 00:32:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:02,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516717726] [2025-01-10 00:32:02,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:02,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 00:32:02,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 00:32:02,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:02,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:02,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:02,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516717726] [2025-01-10 00:32:02,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516717726] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:02,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998089978] [2025-01-10 00:32:02,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:02,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:02,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:02,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:32:02,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 00:32:02,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 00:32:02,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:02,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:02,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 00:32:03,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:03,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:03,116 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:03,117 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 [2025-01-10 00:32:03,125 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 [2025-01-10 00:32:03,204 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:03,205 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 [2025-01-10 00:32:03,248 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:03,249 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 [2025-01-10 00:32:03,260 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 [2025-01-10 00:32:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:03,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:03,273 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_880) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-01-10 00:32:03,278 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-01-10 00:32:03,310 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2025-01-10 00:32:03,311 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 [2025-01-10 00:32:03,317 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int)) (v_ArrVal_883 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_883))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_880)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2025-01-10 00:32:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998089978] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:03,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2025-01-10 00:32:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032285827] [2025-01-10 00:32:03,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:03,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 00:32:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:03,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 00:32:03,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=202, Unknown=3, NotChecked=90, Total=342 [2025-01-10 00:32:03,323 INFO L87 Difference]: Start difference. First operand 624 states and 720 transitions. Second operand has 16 states, 14 states have (on average 9.0) internal successors, (126), 15 states have internal predecessors, (126), 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) [2025-01-10 00:32:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:04,506 INFO L93 Difference]: Finished difference Result 626 states and 724 transitions. [2025-01-10 00:32:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 00:32:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.0) internal successors, (126), 15 states have internal predecessors, (126), 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 88 [2025-01-10 00:32:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:04,508 INFO L225 Difference]: With dead ends: 626 [2025-01-10 00:32:04,508 INFO L226 Difference]: Without dead ends: 626 [2025-01-10 00:32:04,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=418, Unknown=3, NotChecked=132, Total=650 [2025-01-10 00:32:04,509 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 494 mSDsluCounter, 3191 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:04,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 3545 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:32:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2025-01-10 00:32:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 623. [2025-01-10 00:32:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 441 states have (on average 1.5691609977324263) internal successors, (692), 615 states have internal predecessors, (692), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 719 transitions. [2025-01-10 00:32:04,522 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 719 transitions. Word has length 88 [2025-01-10 00:32:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:04,522 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 719 transitions. [2025-01-10 00:32:04,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.0) internal successors, (126), 15 states have internal predecessors, (126), 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) [2025-01-10 00:32:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 719 transitions. [2025-01-10 00:32:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-10 00:32:04,523 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:04,524 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] [2025-01-10 00:32:04,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 00:32:04,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:04,724 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:04,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1036684449, now seen corresponding path program 1 times [2025-01-10 00:32:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907568028] [2025-01-10 00:32:04,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:04,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 00:32:04,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 00:32:04,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:04,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907568028] [2025-01-10 00:32:05,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907568028] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955515283] [2025-01-10 00:32:05,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:05,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:05,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:05,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:05,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:32:05,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-01-10 00:32:05,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-01-10 00:32:05,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:05,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:05,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-10 00:32:05,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:05,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:05,649 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 [2025-01-10 00:32:05,657 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:05,657 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 [2025-01-10 00:32:05,679 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 [2025-01-10 00:32:05,682 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 [2025-01-10 00:32:05,757 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 [2025-01-10 00:32:05,761 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 [2025-01-10 00:32:05,850 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:05,850 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 [2025-01-10 00:32:05,855 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 [2025-01-10 00:32:05,923 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:05,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-01-10 00:32:05,936 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 [2025-01-10 00:32:05,947 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 [2025-01-10 00:32:05,950 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 [2025-01-10 00:32:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:05,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:06,009 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1021 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1021) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1020 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-01-10 00:32:06,018 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1020 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1021 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1021) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2025-01-10 00:32:06,062 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1027 (Array Int Int)) (v_ArrVal_1026 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1027) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1026) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1027 (Array Int Int)) (v_ArrVal_1026 (Array Int Int)) (v_ArrVal_1021 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1026))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1027) .cse1 v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1021) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2025-01-10 00:32:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955515283] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:06,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2025-01-10 00:32:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610888979] [2025-01-10 00:32:06,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:06,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 00:32:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:06,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 00:32:06,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=398, Unknown=3, NotChecked=126, Total=600 [2025-01-10 00:32:06,066 INFO L87 Difference]: Start difference. First operand 623 states and 719 transitions. Second operand has 20 states, 17 states have (on average 8.176470588235293) internal successors, (139), 20 states have internal predecessors, (139), 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) [2025-01-10 00:32:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:08,527 INFO L93 Difference]: Finished difference Result 625 states and 723 transitions. [2025-01-10 00:32:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 00:32:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.176470588235293) internal successors, (139), 20 states have internal predecessors, (139), 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 88 [2025-01-10 00:32:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:08,529 INFO L225 Difference]: With dead ends: 625 [2025-01-10 00:32:08,529 INFO L226 Difference]: Without dead ends: 625 [2025-01-10 00:32:08,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=595, Unknown=3, NotChecked=156, Total=870 [2025-01-10 00:32:08,530 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 490 mSDsluCounter, 4035 mSDsCounter, 0 mSdLazyCounter, 4874 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:08,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 4391 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4874 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-01-10 00:32:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-01-10 00:32:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 613. [2025-01-10 00:32:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 433 states have (on average 1.5750577367205543) internal successors, (682), 606 states have internal predecessors, (682), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:32:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 708 transitions. [2025-01-10 00:32:08,539 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 708 transitions. Word has length 88 [2025-01-10 00:32:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:08,540 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 708 transitions. [2025-01-10 00:32:08,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.176470588235293) internal successors, (139), 20 states have internal predecessors, (139), 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) [2025-01-10 00:32:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 708 transitions. [2025-01-10 00:32:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-01-10 00:32:08,541 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:08,541 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] [2025-01-10 00:32:08,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:32:08,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:08,745 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:08,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1567061888, now seen corresponding path program 1 times [2025-01-10 00:32:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650248960] [2025-01-10 00:32:08,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:08,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-01-10 00:32:08,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-01-10 00:32:08,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:08,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:09,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650248960] [2025-01-10 00:32:09,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650248960] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-10 00:32:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065189178] [2025-01-10 00:32:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:09,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 00:32:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:09,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 00:32:09,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-01-10 00:32:09,219 INFO L87 Difference]: Start difference. First operand 613 states and 708 transitions. Second operand has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 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) [2025-01-10 00:32:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:10,316 INFO L93 Difference]: Finished difference Result 629 states and 727 transitions. [2025-01-10 00:32:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 00:32:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 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 90 [2025-01-10 00:32:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:10,318 INFO L225 Difference]: With dead ends: 629 [2025-01-10 00:32:10,318 INFO L226 Difference]: Without dead ends: 629 [2025-01-10 00:32:10,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-01-10 00:32:10,319 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 506 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:10,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2900 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:32:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2025-01-10 00:32:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 625. [2025-01-10 00:32:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 444 states have (on average 1.5653153153153154) internal successors, (695), 617 states have internal predecessors, (695), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 722 transitions. [2025-01-10 00:32:10,328 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 722 transitions. Word has length 90 [2025-01-10 00:32:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:10,328 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 722 transitions. [2025-01-10 00:32:10,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 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) [2025-01-10 00:32:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 722 transitions. [2025-01-10 00:32:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-01-10 00:32:10,329 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:10,329 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] [2025-01-10 00:32:10,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-10 00:32:10,330 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:10,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1567061887, now seen corresponding path program 1 times [2025-01-10 00:32:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689960287] [2025-01-10 00:32:10,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:10,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-01-10 00:32:10,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-01-10 00:32:10,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:10,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:10,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:10,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689960287] [2025-01-10 00:32:10,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689960287] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:10,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:10,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-01-10 00:32:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837556716] [2025-01-10 00:32:10,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:10,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 00:32:10,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:10,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 00:32:11,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-01-10 00:32:11,000 INFO L87 Difference]: Start difference. First operand 625 states and 722 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 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) [2025-01-10 00:32:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:12,246 INFO L93 Difference]: Finished difference Result 628 states and 726 transitions. [2025-01-10 00:32:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:32:12,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 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 90 [2025-01-10 00:32:12,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:12,249 INFO L225 Difference]: With dead ends: 628 [2025-01-10 00:32:12,249 INFO L226 Difference]: Without dead ends: 628 [2025-01-10 00:32:12,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-01-10 00:32:12,251 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 517 mSDsluCounter, 1910 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:12,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 2267 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-10 00:32:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2025-01-10 00:32:12,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 625. [2025-01-10 00:32:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 444 states have (on average 1.563063063063063) internal successors, (694), 617 states have internal predecessors, (694), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 721 transitions. [2025-01-10 00:32:12,262 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 721 transitions. Word has length 90 [2025-01-10 00:32:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:12,263 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 721 transitions. [2025-01-10 00:32:12,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 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) [2025-01-10 00:32:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 721 transitions. [2025-01-10 00:32:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-01-10 00:32:12,264 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:12,264 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] [2025-01-10 00:32:12,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-10 00:32:12,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:12,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1243981351, now seen corresponding path program 1 times [2025-01-10 00:32:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:12,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551375097] [2025-01-10 00:32:12,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:12,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:12,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-01-10 00:32:12,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-01-10 00:32:12,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:12,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:12,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551375097] [2025-01-10 00:32:12,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551375097] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:12,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554122537] [2025-01-10 00:32:12,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:12,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:12,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:12,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:32:12,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-01-10 00:32:12,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-01-10 00:32:12,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:12,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:12,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-10 00:32:12,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:12,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:13,056 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:13,057 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 [2025-01-10 00:32:13,063 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 [2025-01-10 00:32:13,116 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:13,117 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 [2025-01-10 00:32:13,161 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:13,162 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 [2025-01-10 00:32:13,213 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:13,213 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 [2025-01-10 00:32:13,225 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 [2025-01-10 00:32:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:13,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:13,272 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1301 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1301) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-01-10 00:32:13,322 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1301 (Array Int Int)) (v_ArrVal_1300 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1300))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1301)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-01-10 00:32:13,358 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2025-01-10 00:32:13,358 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 [2025-01-10 00:32:13,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554122537] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:13,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:13,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 17 [2025-01-10 00:32:13,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580922278] [2025-01-10 00:32:13,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:13,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 00:32:13,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:13,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 00:32:13,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=327, Unknown=34, NotChecked=78, Total=506 [2025-01-10 00:32:13,395 INFO L87 Difference]: Start difference. First operand 625 states and 721 transitions. Second operand has 18 states, 16 states have (on average 8.1875) internal successors, (131), 17 states have internal predecessors, (131), 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) [2025-01-10 00:32:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:14,511 INFO L93 Difference]: Finished difference Result 627 states and 725 transitions. [2025-01-10 00:32:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 00:32:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.1875) internal successors, (131), 17 states have internal predecessors, (131), 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 91 [2025-01-10 00:32:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:14,514 INFO L225 Difference]: With dead ends: 627 [2025-01-10 00:32:14,514 INFO L226 Difference]: Without dead ends: 627 [2025-01-10 00:32:14,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=644, Unknown=45, NotChecked=110, Total=930 [2025-01-10 00:32:14,515 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 488 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:14,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 2920 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:32:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2025-01-10 00:32:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 624. [2025-01-10 00:32:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 444 states have (on average 1.5608108108108107) internal successors, (693), 616 states have internal predecessors, (693), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 720 transitions. [2025-01-10 00:32:14,523 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 720 transitions. Word has length 91 [2025-01-10 00:32:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:14,523 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 720 transitions. [2025-01-10 00:32:14,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.1875) internal successors, (131), 17 states have internal predecessors, (131), 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) [2025-01-10 00:32:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 720 transitions. [2025-01-10 00:32:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-01-10 00:32:14,524 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:14,524 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] [2025-01-10 00:32:14,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 00:32:14,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-10 00:32:14,724 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:14,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1243981352, now seen corresponding path program 1 times [2025-01-10 00:32:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:14,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556678086] [2025-01-10 00:32:14,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:14,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-01-10 00:32:14,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-01-10 00:32:14,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:14,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:15,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:15,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556678086] [2025-01-10 00:32:15,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556678086] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:15,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319419942] [2025-01-10 00:32:15,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:15,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:15,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:15,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:15,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 00:32:15,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-01-10 00:32:15,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-01-10 00:32:15,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:15,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:15,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-10 00:32:15,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:15,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:15,587 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:15,587 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 [2025-01-10 00:32:15,591 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 [2025-01-10 00:32:15,611 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 19 treesize of output 1 [2025-01-10 00:32:15,614 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 [2025-01-10 00:32:15,684 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 [2025-01-10 00:32:15,688 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 [2025-01-10 00:32:15,768 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:15,768 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 [2025-01-10 00:32:15,772 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 [2025-01-10 00:32:15,828 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:15,828 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 [2025-01-10 00:32:15,832 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 [2025-01-10 00:32:15,885 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:15,886 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 [2025-01-10 00:32:15,892 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 41 treesize of output 22 [2025-01-10 00:32:15,933 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 [2025-01-10 00:32:15,938 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 30 treesize of output 12 [2025-01-10 00:32:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:15,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:16,357 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1462 (Array Int Int)) (v_ArrVal_1461 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1462))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse0 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1461) .cse3 v_ArrVal_1454))) (or (< (+ 4 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0) (forall ((v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1453 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 (select (select (store .cse2 .cse3 v_ArrVal_1453) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8)))))))) (forall ((v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1462 (Array Int Int)) (v_ArrVal_1461 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1462))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse4 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1461) .cse8 v_ArrVal_1454))) (or (< (+ 4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0) (forall ((v_ArrVal_1456 (Array Int Int)) (v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1453 (Array Int Int))) (let ((.cse6 (store .cse7 .cse8 v_ArrVal_1453))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse4 .cse5 v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_1456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))))) is different from false [2025-01-10 00:32:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319419942] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:16,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:16,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2025-01-10 00:32:16,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790759341] [2025-01-10 00:32:16,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:16,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 00:32:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:16,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 00:32:16,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=687, Unknown=18, NotChecked=54, Total=870 [2025-01-10 00:32:16,361 INFO L87 Difference]: Start difference. First operand 624 states and 720 transitions. Second operand has 23 states, 20 states have (on average 7.25) internal successors, (145), 23 states have internal predecessors, (145), 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) [2025-01-10 00:32:18,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:18,807 INFO L93 Difference]: Finished difference Result 626 states and 724 transitions. [2025-01-10 00:32:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 00:32:18,808 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.25) internal successors, (145), 23 states have internal predecessors, (145), 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 91 [2025-01-10 00:32:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:18,810 INFO L225 Difference]: With dead ends: 626 [2025-01-10 00:32:18,810 INFO L226 Difference]: Without dead ends: 626 [2025-01-10 00:32:18,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=995, Unknown=18, NotChecked=66, Total=1260 [2025-01-10 00:32:18,811 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 490 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 4865 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 4892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:18,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 4388 Invalid, 4892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4865 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-01-10 00:32:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2025-01-10 00:32:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 611. [2025-01-10 00:32:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 433 states have (on average 1.5704387990762125) internal successors, (680), 604 states have internal predecessors, (680), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:32:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 706 transitions. [2025-01-10 00:32:18,819 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 706 transitions. Word has length 91 [2025-01-10 00:32:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:18,820 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 706 transitions. [2025-01-10 00:32:18,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.25) internal successors, (145), 23 states have internal predecessors, (145), 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) [2025-01-10 00:32:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 706 transitions. [2025-01-10 00:32:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-10 00:32:18,821 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:18,821 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] [2025-01-10 00:32:18,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:32:19,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-10 00:32:19,022 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:19,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1954414828, now seen corresponding path program 1 times [2025-01-10 00:32:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379208471] [2025-01-10 00:32:19,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:19,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:19,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-10 00:32:19,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-10 00:32:19,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:19,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379208471] [2025-01-10 00:32:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379208471] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-01-10 00:32:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678786031] [2025-01-10 00:32:19,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:19,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 00:32:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:19,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 00:32:19,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-01-10 00:32:19,523 INFO L87 Difference]: Start difference. First operand 611 states and 706 transitions. Second operand has 16 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 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) [2025-01-10 00:32:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:20,596 INFO L93 Difference]: Finished difference Result 630 states and 728 transitions. [2025-01-10 00:32:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 00:32:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 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 93 [2025-01-10 00:32:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:20,598 INFO L225 Difference]: With dead ends: 630 [2025-01-10 00:32:20,598 INFO L226 Difference]: Without dead ends: 630 [2025-01-10 00:32:20,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2025-01-10 00:32:20,598 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 507 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:20,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 2896 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:32:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2025-01-10 00:32:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 626. [2025-01-10 00:32:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 447 states have (on average 1.5570469798657718) internal successors, (696), 618 states have internal predecessors, (696), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 723 transitions. [2025-01-10 00:32:20,605 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 723 transitions. Word has length 93 [2025-01-10 00:32:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:20,606 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 723 transitions. [2025-01-10 00:32:20,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 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) [2025-01-10 00:32:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 723 transitions. [2025-01-10 00:32:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-10 00:32:20,606 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:20,607 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] [2025-01-10 00:32:20,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-01-10 00:32:20,607 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:20,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1954414829, now seen corresponding path program 1 times [2025-01-10 00:32:20,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548647968] [2025-01-10 00:32:20,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:20,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-01-10 00:32:20,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-01-10 00:32:20,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:20,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548647968] [2025-01-10 00:32:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548647968] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-10 00:32:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599646060] [2025-01-10 00:32:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:21,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 00:32:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:21,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 00:32:21,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-01-10 00:32:21,268 INFO L87 Difference]: Start difference. First operand 626 states and 723 transitions. Second operand has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 13 states have internal predecessors, (91), 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) [2025-01-10 00:32:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:22,288 INFO L93 Difference]: Finished difference Result 629 states and 727 transitions. [2025-01-10 00:32:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 00:32:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 13 states have internal predecessors, (91), 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 93 [2025-01-10 00:32:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:22,290 INFO L225 Difference]: With dead ends: 629 [2025-01-10 00:32:22,290 INFO L226 Difference]: Without dead ends: 629 [2025-01-10 00:32:22,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-01-10 00:32:22,291 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 519 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:22,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 2019 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-10 00:32:22,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2025-01-10 00:32:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 626. [2025-01-10 00:32:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 447 states have (on average 1.5548098434004474) internal successors, (695), 618 states have internal predecessors, (695), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 722 transitions. [2025-01-10 00:32:22,297 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 722 transitions. Word has length 93 [2025-01-10 00:32:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 722 transitions. [2025-01-10 00:32:22,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 13 states have internal predecessors, (91), 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) [2025-01-10 00:32:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 722 transitions. [2025-01-10 00:32:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-01-10 00:32:22,299 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:22,299 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] [2025-01-10 00:32:22,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-01-10 00:32:22,299 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:22,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1823756827, now seen corresponding path program 1 times [2025-01-10 00:32:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:22,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673692387] [2025-01-10 00:32:22,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:22,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-10 00:32:22,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-10 00:32:22,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:22,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673692387] [2025-01-10 00:32:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673692387] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881935737] [2025-01-10 00:32:22,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:22,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:22,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:22,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:32:23,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-10 00:32:23,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-10 00:32:23,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:23,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:23,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-10 00:32:23,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:23,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:23,141 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:23,141 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 [2025-01-10 00:32:23,146 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 [2025-01-10 00:32:23,223 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:23,223 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 [2025-01-10 00:32:23,257 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:23,258 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 [2025-01-10 00:32:23,294 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:23,294 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 [2025-01-10 00:32:23,328 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:23,328 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 [2025-01-10 00:32:23,339 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 [2025-01-10 00:32:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:23,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:23,379 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1761 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1761) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-01-10 00:32:23,578 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2025-01-10 00:32:23,579 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 [2025-01-10 00:32:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881935737] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:23,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:23,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 20 [2025-01-10 00:32:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371599985] [2025-01-10 00:32:23,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:23,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 00:32:23,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:23,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 00:32:23,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=542, Unknown=68, NotChecked=50, Total=756 [2025-01-10 00:32:23,622 INFO L87 Difference]: Start difference. First operand 626 states and 722 transitions. Second operand has 21 states, 19 states have (on average 7.473684210526316) internal successors, (142), 21 states have internal predecessors, (142), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:32:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:25,048 INFO L93 Difference]: Finished difference Result 628 states and 726 transitions. [2025-01-10 00:32:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 00:32:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.473684210526316) internal successors, (142), 21 states have internal predecessors, (142), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 94 [2025-01-10 00:32:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:25,050 INFO L225 Difference]: With dead ends: 628 [2025-01-10 00:32:25,050 INFO L226 Difference]: Without dead ends: 628 [2025-01-10 00:32:25,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1013, Unknown=68, NotChecked=68, Total=1332 [2025-01-10 00:32:25,050 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 484 mSDsluCounter, 3837 mSDsCounter, 0 mSdLazyCounter, 3318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:25,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 4189 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3318 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-10 00:32:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2025-01-10 00:32:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 625. [2025-01-10 00:32:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 447 states have (on average 1.552572706935123) internal successors, (694), 617 states have internal predecessors, (694), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 721 transitions. [2025-01-10 00:32:25,057 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 721 transitions. Word has length 94 [2025-01-10 00:32:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:25,058 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 721 transitions. [2025-01-10 00:32:25,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.473684210526316) internal successors, (142), 21 states have internal predecessors, (142), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:32:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 721 transitions. [2025-01-10 00:32:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-01-10 00:32:25,058 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:25,059 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] [2025-01-10 00:32:25,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:32:25,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:25,259 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:25,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1823756826, now seen corresponding path program 1 times [2025-01-10 00:32:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590117441] [2025-01-10 00:32:25,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:25,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-10 00:32:25,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-10 00:32:25,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:25,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:26,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590117441] [2025-01-10 00:32:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590117441] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724820120] [2025-01-10 00:32:26,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:26,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:26,109 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:26,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 00:32:26,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-10 00:32:26,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-10 00:32:26,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:26,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:26,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-10 00:32:26,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:26,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:26,389 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:26,390 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 [2025-01-10 00:32:26,396 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 [2025-01-10 00:32:26,401 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 [2025-01-10 00:32:26,405 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 [2025-01-10 00:32:26,460 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 [2025-01-10 00:32:26,464 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 [2025-01-10 00:32:26,538 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:26,538 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 [2025-01-10 00:32:26,542 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 [2025-01-10 00:32:26,604 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:26,605 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 [2025-01-10 00:32:26,611 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 [2025-01-10 00:32:26,654 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:26,654 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 [2025-01-10 00:32:26,658 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 [2025-01-10 00:32:26,711 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:26,712 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 [2025-01-10 00:32:26,718 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 [2025-01-10 00:32:26,730 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 [2025-01-10 00:32:26,735 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 [2025-01-10 00:32:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:26,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:26,796 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1929 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-01-10 00:32:26,804 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1929 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20)))))) is different from false [2025-01-10 00:32:26,820 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1927))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1928) .cse0 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1928) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1927) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2025-01-10 00:32:26,835 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1928) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1927) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1927))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1928) .cse2 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2025-01-10 00:32:26,861 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1926))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1925) .cse0 v_ArrVal_1928) (select (select (store .cse1 .cse0 v_ArrVal_1927) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1929))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20))) (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1926))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1927))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1925) .cse3 v_ArrVal_1928) .cse4 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2025-01-10 00:32:26,884 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1926))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1927))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1925) .cse1 v_ArrVal_1928) .cse2 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1926))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1925) .cse6 v_ArrVal_1928) (select (select (store .cse7 .cse6 v_ArrVal_1927) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1929))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2025-01-10 00:32:26,943 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1936 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1935 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1936))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_1926))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1927))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1935) .cse0 v_ArrVal_1925) .cse1 v_ArrVal_1928) .cse2 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1936 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1935 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1936))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_1926))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1935) .cse7 v_ArrVal_1925) .cse8 v_ArrVal_1928) (select (select (store .cse9 .cse8 v_ArrVal_1927) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1929))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))))) is different from false [2025-01-10 00:32:26,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724820120] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:26,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:26,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 19 [2025-01-10 00:32:26,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972055019] [2025-01-10 00:32:26,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:26,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 00:32:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:26,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 00:32:26,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=394, Unknown=7, NotChecked=322, Total=812 [2025-01-10 00:32:26,948 INFO L87 Difference]: Start difference. First operand 625 states and 721 transitions. Second operand has 20 states, 18 states have (on average 7.833333333333333) internal successors, (141), 20 states have internal predecessors, (141), 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) [2025-01-10 00:32:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:28,756 INFO L93 Difference]: Finished difference Result 627 states and 725 transitions. [2025-01-10 00:32:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 00:32:28,756 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 7.833333333333333) internal successors, (141), 20 states have internal predecessors, (141), 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 94 [2025-01-10 00:32:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:28,759 INFO L225 Difference]: With dead ends: 627 [2025-01-10 00:32:28,759 INFO L226 Difference]: Without dead ends: 627 [2025-01-10 00:32:28,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=690, Unknown=7, NotChecked=420, Total=1260 [2025-01-10 00:32:28,760 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 484 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:28,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 3087 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3294 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-10 00:32:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2025-01-10 00:32:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 609. [2025-01-10 00:32:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 433 states have (on average 1.5658198614318706) internal successors, (678), 602 states have internal predecessors, (678), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-10 00:32:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 704 transitions. [2025-01-10 00:32:28,771 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 704 transitions. Word has length 94 [2025-01-10 00:32:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:28,771 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 704 transitions. [2025-01-10 00:32:28,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 7.833333333333333) internal successors, (141), 20 states have internal predecessors, (141), 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) [2025-01-10 00:32:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 704 transitions. [2025-01-10 00:32:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-10 00:32:28,772 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:28,772 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] [2025-01-10 00:32:28,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 00:32:28,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-10 00:32:28,973 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:28,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash 329304878, now seen corresponding path program 1 times [2025-01-10 00:32:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:28,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510602964] [2025-01-10 00:32:28,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:28,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:28,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-01-10 00:32:29,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-01-10 00:32:29,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:29,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:29,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510602964] [2025-01-10 00:32:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510602964] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:29,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:29,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-01-10 00:32:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075133836] [2025-01-10 00:32:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:29,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 00:32:29,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:29,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 00:32:29,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-01-10 00:32:29,605 INFO L87 Difference]: Start difference. First operand 609 states and 704 transitions. Second operand has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 16 states have internal predecessors, (95), 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) [2025-01-10 00:32:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:30,725 INFO L93 Difference]: Finished difference Result 632 states and 730 transitions. [2025-01-10 00:32:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 00:32:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 16 states have internal predecessors, (95), 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 97 [2025-01-10 00:32:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:30,727 INFO L225 Difference]: With dead ends: 632 [2025-01-10 00:32:30,727 INFO L226 Difference]: Without dead ends: 632 [2025-01-10 00:32:30,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-01-10 00:32:30,727 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 504 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:30,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 3241 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:32:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2025-01-10 00:32:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 628. [2025-01-10 00:32:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 451 states have (on average 1.5476718403547671) internal successors, (698), 620 states have internal predecessors, (698), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 725 transitions. [2025-01-10 00:32:30,734 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 725 transitions. Word has length 97 [2025-01-10 00:32:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:30,734 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 725 transitions. [2025-01-10 00:32:30,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 16 states have internal predecessors, (95), 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) [2025-01-10 00:32:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 725 transitions. [2025-01-10 00:32:30,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-10 00:32:30,734 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:30,735 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] [2025-01-10 00:32:30,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-01-10 00:32:30,735 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:30,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash 329304879, now seen corresponding path program 1 times [2025-01-10 00:32:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:30,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254771357] [2025-01-10 00:32:30,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:30,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-01-10 00:32:30,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-01-10 00:32:30,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:30,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:31,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254771357] [2025-01-10 00:32:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254771357] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:32:31,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:32:31,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-01-10 00:32:31,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324538027] [2025-01-10 00:32:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:32:31,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 00:32:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:31,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 00:32:31,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-01-10 00:32:31,540 INFO L87 Difference]: Start difference. First operand 628 states and 725 transitions. Second operand has 18 states, 16 states have (on average 5.9375) internal successors, (95), 17 states have internal predecessors, (95), 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) [2025-01-10 00:32:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:33,109 INFO L93 Difference]: Finished difference Result 631 states and 729 transitions. [2025-01-10 00:32:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 00:32:33,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.9375) internal successors, (95), 17 states have internal predecessors, (95), 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 97 [2025-01-10 00:32:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:33,111 INFO L225 Difference]: With dead ends: 631 [2025-01-10 00:32:33,111 INFO L226 Difference]: Without dead ends: 631 [2025-01-10 00:32:33,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2025-01-10 00:32:33,114 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 524 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:33,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 3185 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-10 00:32:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2025-01-10 00:32:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2025-01-10 00:32:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 451 states have (on average 1.5454545454545454) internal successors, (697), 620 states have internal predecessors, (697), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 724 transitions. [2025-01-10 00:32:33,120 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 724 transitions. Word has length 97 [2025-01-10 00:32:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:33,120 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 724 transitions. [2025-01-10 00:32:33,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.9375) internal successors, (95), 17 states have internal predecessors, (95), 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) [2025-01-10 00:32:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 724 transitions. [2025-01-10 00:32:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-01-10 00:32:33,121 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:33,121 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] [2025-01-10 00:32:33,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-01-10 00:32:33,121 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:33,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1989323865, now seen corresponding path program 1 times [2025-01-10 00:32:33,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:33,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786847576] [2025-01-10 00:32:33,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:33,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-01-10 00:32:33,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-01-10 00:32:33,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:33,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:33,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786847576] [2025-01-10 00:32:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786847576] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387508870] [2025-01-10 00:32:33,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:33,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:33,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 00:32:34,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-01-10 00:32:34,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-01-10 00:32:34,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:34,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:34,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-10 00:32:34,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:34,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:34,161 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:34,162 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 [2025-01-10 00:32:34,165 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 [2025-01-10 00:32:34,228 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:34,229 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 [2025-01-10 00:32:34,266 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:34,266 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 [2025-01-10 00:32:34,301 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:34,302 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 [2025-01-10 00:32:34,341 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:34,341 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 [2025-01-10 00:32:34,378 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:34,378 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 [2025-01-10 00:32:34,395 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 [2025-01-10 00:32:34,413 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-01-10 00:32:34,414 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 [2025-01-10 00:32:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:34,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:34,970 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2025-01-10 00:32:34,971 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 [2025-01-10 00:32:35,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387508870] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:35,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:35,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 22 [2025-01-10 00:32:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115159388] [2025-01-10 00:32:35,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:35,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 00:32:35,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:35,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 00:32:35,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=924, Unknown=53, NotChecked=0, Total=1122 [2025-01-10 00:32:35,107 INFO L87 Difference]: Start difference. First operand 628 states and 724 transitions. Second operand has 23 states, 21 states have (on average 7.0476190476190474) internal successors, (148), 23 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:32:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:32:36,282 INFO L93 Difference]: Finished difference Result 630 states and 728 transitions. [2025-01-10 00:32:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 00:32:36,283 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 7.0476190476190474) internal successors, (148), 23 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2025-01-10 00:32:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:32:36,284 INFO L225 Difference]: With dead ends: 630 [2025-01-10 00:32:36,284 INFO L226 Difference]: Without dead ends: 630 [2025-01-10 00:32:36,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=1572, Unknown=53, NotChecked=0, Total=1892 [2025-01-10 00:32:36,285 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 491 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:32:36,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 2931 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-10 00:32:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2025-01-10 00:32:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 627. [2025-01-10 00:32:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 451 states have (on average 1.5432372505543237) internal successors, (696), 619 states have internal predecessors, (696), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-01-10 00:32:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 723 transitions. [2025-01-10 00:32:36,292 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 723 transitions. Word has length 98 [2025-01-10 00:32:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:32:36,293 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 723 transitions. [2025-01-10 00:32:36,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 7.0476190476190474) internal successors, (148), 23 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-10 00:32:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 723 transitions. [2025-01-10 00:32:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-01-10 00:32:36,294 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:32:36,294 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] [2025-01-10 00:32:36,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:32:36,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:36,495 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-01-10 00:32:36,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:32:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1989323864, now seen corresponding path program 1 times [2025-01-10 00:32:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:32:36,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346319086] [2025-01-10 00:32:36,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:36,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:32:36,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-01-10 00:32:36,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-01-10 00:32:36,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:36,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:37,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:32:37,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346319086] [2025-01-10 00:32:37,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346319086] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:37,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112781797] [2025-01-10 00:32:37,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:32:37,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:32:37,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:32:37,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:32:37,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 00:32:37,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-01-10 00:32:37,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-01-10 00:32:37,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:32:37,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:32:37,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-10 00:32:37,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:32:37,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-10 00:32:37,655 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:37,655 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 [2025-01-10 00:32:37,661 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 [2025-01-10 00:32:37,687 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 [2025-01-10 00:32:37,691 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 [2025-01-10 00:32:37,768 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 [2025-01-10 00:32:37,772 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 [2025-01-10 00:32:37,879 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:37,880 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 [2025-01-10 00:32:37,885 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 [2025-01-10 00:32:37,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:37,974 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 [2025-01-10 00:32:37,976 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 [2025-01-10 00:32:38,045 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:38,045 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 [2025-01-10 00:32:38,048 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 [2025-01-10 00:32:38,112 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:38,112 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 [2025-01-10 00:32:38,115 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 [2025-01-10 00:32:38,201 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:32:38,201 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 [2025-01-10 00:32:38,206 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 [2025-01-10 00:32:38,231 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 [2025-01-10 00:32:38,237 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 [2025-01-10 00:32:38,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:32:38,290 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2025-01-10 00:32:38,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2025-01-10 00:32:38,299 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-10 00:32:38,299 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 [2025-01-10 00:32:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:32:38,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:32:38,832 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)) (forall ((v_ArrVal_2457 Int)) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2451))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_2453))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2452) .cse0 v_ArrVal_2454) .cse1 v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2457) (select (select (store .cse3 .cse1 v_ArrVal_2455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) (or (forall ((v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int))) (< 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2451))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2452) .cse5 v_ArrVal_2454) (select (select (store .cse6 .cse5 v_ArrVal_2453) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2456))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))))) is different from false [2025-01-10 00:32:56,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:32:56,429 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 [2025-01-10 00:32:57,470 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2449 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2463 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2462 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (< 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2462))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_2450))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2451))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2463) .cse0 v_ArrVal_2449) .cse1 v_ArrVal_2452) .cse2 v_ArrVal_2454) (select (select (store .cse3 .cse2 v_ArrVal_2453) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2456))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))) (forall ((v_prenex_24 Int)) (or (forall ((v_prenex_21 (Array Int Int)) (v_prenex_30 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_prenex_25 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_ArrVal_2457 Int) (v_prenex_29 (Array Int Int)) (v_prenex_28 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_28))) (let ((.cse7 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse7 v_prenex_30))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store .cse13 .cse8 v_prenex_29))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse11 (store .cse12 .cse9 v_prenex_25))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_26) .cse7 v_prenex_21) .cse8 v_prenex_27) .cse9 v_prenex_23) .cse10 v_prenex_22) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 3) (select (store |c_#length| v_prenex_24 v_ArrVal_2457) (select (select (store .cse11 .cse10 v_ArrVal_2455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) (= |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_24))))) is different from false [2025-01-10 00:32:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112781797] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:32:57,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:32:57,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2025-01-10 00:32:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052049309] [2025-01-10 00:32:57,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:32:57,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-10 00:32:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:32:57,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-10 00:32:57,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1468, Unknown=67, NotChecked=162, Total=1892 [2025-01-10 00:32:57,487 INFO L87 Difference]: Start difference. First operand 627 states and 723 transitions. Second operand has 32 states, 29 states have (on average 5.482758620689655) internal successors, (159), 30 states have internal predecessors, (159), 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)