./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:06:16,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:06:17,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 05:06:17,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:06:17,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:06:17,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:06:17,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:06:17,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:06:17,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 05:06:17,079 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 05:06:17,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:06:17,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:06:17,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:06:17,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:06:17,080 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:06:17,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:06:17,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:06:17,081 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:06:17,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:06:17,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:06:17,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:06:17,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:06:17,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:06:17,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:06:17,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 05:06:17,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 05:06:17,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:06:17,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:06:17,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:06:17,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:06:17,084 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 ! call(reach_error())) ) 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 -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2025-02-08 05:06:17,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:06:17,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:06:17,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:06:17,402 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:06:17,403 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:06:17,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2025-02-08 05:06:18,717 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43de82aeb/1ab505fbf013451d869e4a4090befac6/FLAG061effcab [2025-02-08 05:06:19,099 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:06:19,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2025-02-08 05:06:19,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43de82aeb/1ab505fbf013451d869e4a4090befac6/FLAG061effcab [2025-02-08 05:06:19,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43de82aeb/1ab505fbf013451d869e4a4090befac6 [2025-02-08 05:06:19,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:06:19,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:06:19,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:06:19,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:06:19,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:06:19,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:19,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22386b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19, skipping insertion in model container [2025-02-08 05:06:19,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:19,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:06:19,513 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2025-02-08 05:06:19,638 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2025-02-08 05:06:19,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:06:19,659 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:06:19,706 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2025-02-08 05:06:19,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2025-02-08 05:06:19,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:06:19,807 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:06:19,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19 WrapperNode [2025-02-08 05:06:19,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:06:19,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:06:19,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:06:19,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:06:19,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:19,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:19,911 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1381 [2025-02-08 05:06:19,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:06:19,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:06:19,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:06:19,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:06:19,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:19,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:19,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,023 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-08 05:06:20,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:06:20,093 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:06:20,094 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:06:20,094 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:06:20,095 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (1/1) ... [2025-02-08 05:06:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:06:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:06:20,130 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) [2025-02-08 05:06:20,136 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 [2025-02-08 05:06:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 05:06:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 05:06:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 05:06:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 05:06:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 05:06:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 05:06:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 05:06:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 05:06:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 05:06:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 05:06:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 05:06:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 05:06:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 05:06:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 05:06:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2025-02-08 05:06:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2025-02-08 05:06:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 05:06:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:06:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 05:06:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 05:06:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 05:06:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 05:06:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 05:06:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 05:06:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 05:06:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 05:06:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 05:06:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 05:06:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 05:06:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:06:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:06:20,357 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:06:20,359 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:06:21,796 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 05:06:21,902 INFO L? ?]: Removed 327 outVars from TransFormulas that were not future-live. [2025-02-08 05:06:21,903 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:06:21,963 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:06:21,963 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-08 05:06:21,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:06:21 BoogieIcfgContainer [2025-02-08 05:06:21,964 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:06:21,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:06:21,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:06:21,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:06:21,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:06:19" (1/3) ... [2025-02-08 05:06:21,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbd4aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:06:21, skipping insertion in model container [2025-02-08 05:06:21,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:06:19" (2/3) ... [2025-02-08 05:06:21,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbd4aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:06:21, skipping insertion in model container [2025-02-08 05:06:21,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:06:21" (3/3) ... [2025-02-08 05:06:21,975 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2025-02-08 05:06:21,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:06:21,989 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test8-1.i that has 6 procedures, 439 locations, 1 initial locations, 37 loop locations, and 2 error locations. [2025-02-08 05:06:22,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:06:22,065 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=LoopHeads, 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;@4b6e41f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:06:22,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 05:06:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 404 states have (on average 1.6262376237623761) internal successors, (657), 421 states have internal predecessors, (657), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-08 05:06:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 05:06:22,078 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:22,079 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:22,079 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:22,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -419174245, now seen corresponding path program 1 times [2025-02-08 05:06:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:22,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479187962] [2025-02-08 05:06:22,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:22,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:22,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 05:06:22,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 05:06:22,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:22,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:06:22,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479187962] [2025-02-08 05:06:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479187962] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:22,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:06:22,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:06:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341662713] [2025-02-08 05:06:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:22,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 05:06:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:22,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 05:06:22,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 05:06:22,262 INFO L87 Difference]: Start difference. First operand has 431 states, 404 states have (on average 1.6262376237623761) internal successors, (657), 421 states have internal predecessors, (657), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2025-02-08 05:06:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:22,421 INFO L93 Difference]: Finished difference Result 861 states and 1408 transitions. [2025-02-08 05:06:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 05:06:22,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2025-02-08 05:06:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:22,436 INFO L225 Difference]: With dead ends: 861 [2025-02-08 05:06:22,436 INFO L226 Difference]: Without dead ends: 424 [2025-02-08 05:06:22,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 05:06:22,449 INFO L435 NwaCegarLoop]: 591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:22,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 591 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:06:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2025-02-08 05:06:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2025-02-08 05:06:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 400 states have (on average 1.4675) internal successors, (587), 415 states have internal predecessors, (587), 20 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 05:06:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 612 transitions. [2025-02-08 05:06:22,515 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 612 transitions. Word has length 8 [2025-02-08 05:06:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:22,517 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 612 transitions. [2025-02-08 05:06:22,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2025-02-08 05:06:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 612 transitions. [2025-02-08 05:06:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 05:06:22,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:22,520 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] [2025-02-08 05:06:22,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 05:06:22,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:22,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:22,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1533095503, now seen corresponding path program 1 times [2025-02-08 05:06:22,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697625873] [2025-02-08 05:06:22,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:22,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 05:06:22,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 05:06:22,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:22,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:06:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697625873] [2025-02-08 05:06:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697625873] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:23,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:06:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:06:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535328644] [2025-02-08 05:06:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:23,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:06:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:23,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:06:23,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:06:23,061 INFO L87 Difference]: Start difference. First operand 424 states and 612 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-08 05:06:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:23,430 INFO L93 Difference]: Finished difference Result 1029 states and 1491 transitions. [2025-02-08 05:06:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 05:06:23,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2025-02-08 05:06:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:23,436 INFO L225 Difference]: With dead ends: 1029 [2025-02-08 05:06:23,437 INFO L226 Difference]: Without dead ends: 805 [2025-02-08 05:06:23,438 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 [2025-02-08 05:06:23,440 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 543 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:23,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1723 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 05:06:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2025-02-08 05:06:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 426. [2025-02-08 05:06:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 402 states have (on average 1.4651741293532339) internal successors, (589), 417 states have internal predecessors, (589), 20 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 05:06:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 614 transitions. [2025-02-08 05:06:23,489 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 614 transitions. Word has length 62 [2025-02-08 05:06:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:23,489 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 614 transitions. [2025-02-08 05:06:23,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-08 05:06:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 614 transitions. [2025-02-08 05:06:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 05:06:23,492 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:23,492 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] [2025-02-08 05:06:23,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 05:06:23,494 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:23,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash 328605862, now seen corresponding path program 1 times [2025-02-08 05:06:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083224700] [2025-02-08 05:06:23,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:23,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 05:06:23,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 05:06:23,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:23,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:06:23,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083224700] [2025-02-08 05:06:23,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083224700] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:23,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:06:23,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 05:06:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552446659] [2025-02-08 05:06:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:23,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:06:23,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:23,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:06:23,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 05:06:23,877 INFO L87 Difference]: Start difference. First operand 426 states and 614 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:06:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:24,080 INFO L93 Difference]: Finished difference Result 807 states and 1159 transitions. [2025-02-08 05:06:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 05:06:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-02-08 05:06:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:24,086 INFO L225 Difference]: With dead ends: 807 [2025-02-08 05:06:24,086 INFO L226 Difference]: Without dead ends: 384 [2025-02-08 05:06:24,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:06:24,088 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 30 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:24,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1415 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:06:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2025-02-08 05:06:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2025-02-08 05:06:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 360 states have (on average 1.4222222222222223) internal successors, (512), 375 states have internal predecessors, (512), 20 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 05:06:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 537 transitions. [2025-02-08 05:06:24,104 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 537 transitions. Word has length 83 [2025-02-08 05:06:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:24,104 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 537 transitions. [2025-02-08 05:06:24,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:06:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 537 transitions. [2025-02-08 05:06:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 05:06:24,110 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:24,110 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] [2025-02-08 05:06:24,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 05:06:24,111 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:24,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash 40838975, now seen corresponding path program 1 times [2025-02-08 05:06:24,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:24,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984602565] [2025-02-08 05:06:24,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:24,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 05:06:24,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 05:06:24,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:24,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:06:24,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984602565] [2025-02-08 05:06:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984602565] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:06:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 05:06:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344346726] [2025-02-08 05:06:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:24,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:06:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:24,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:06:24,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:06:24,322 INFO L87 Difference]: Start difference. First operand 384 states and 537 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:06:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:24,522 INFO L93 Difference]: Finished difference Result 1015 states and 1431 transitions. [2025-02-08 05:06:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:06:24,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-02-08 05:06:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:24,528 INFO L225 Difference]: With dead ends: 1015 [2025-02-08 05:06:24,528 INFO L226 Difference]: Without dead ends: 634 [2025-02-08 05:06:24,530 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 [2025-02-08 05:06:24,530 INFO L435 NwaCegarLoop]: 665 mSDtfsCounter, 294 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:24,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1138 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 05:06:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-02-08 05:06:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2025-02-08 05:06:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 606 states have (on average 1.4290429042904291) internal successors, (866), 621 states have internal predecessors, (866), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:06:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 893 transitions. [2025-02-08 05:06:24,563 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 893 transitions. Word has length 83 [2025-02-08 05:06:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:24,565 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 893 transitions. [2025-02-08 05:06:24,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 05:06:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 893 transitions. [2025-02-08 05:06:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-08 05:06:24,570 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:24,570 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:24,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 05:06:24,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:24,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1575368745, now seen corresponding path program 1 times [2025-02-08 05:06:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802883346] [2025-02-08 05:06:24,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:24,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 05:06:24,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 05:06:24,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:24,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 05:06:25,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:25,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802883346] [2025-02-08 05:06:25,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802883346] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:06:25,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901145893] [2025-02-08 05:06:25,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:25,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:25,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:06:25,108 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) [2025-02-08 05:06:25,110 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 [2025-02-08 05:06:25,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 05:06:25,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 05:06:25,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:25,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:25,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 05:06:25,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:06:25,455 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 11 treesize of output 7 [2025-02-08 05:06:25,480 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 22 treesize of output 7 [2025-02-08 05:06:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:06:26,355 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:06:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901145893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:26,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:06:26,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 13 [2025-02-08 05:06:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755552857] [2025-02-08 05:06:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:26,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 05:06:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:26,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 05:06:26,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-08 05:06:26,360 INFO L87 Difference]: Start difference. First operand 631 states and 893 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:28,391 INFO L93 Difference]: Finished difference Result 1516 states and 2152 transitions. [2025-02-08 05:06:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 05:06:28,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2025-02-08 05:06:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:28,396 INFO L225 Difference]: With dead ends: 1516 [2025-02-08 05:06:28,396 INFO L226 Difference]: Without dead ends: 927 [2025-02-08 05:06:28,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-02-08 05:06:28,398 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 584 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:28,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3508 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 05:06:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2025-02-08 05:06:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 631. [2025-02-08 05:06:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 606 states have (on average 1.4273927392739274) internal successors, (865), 621 states have internal predecessors, (865), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:06:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 892 transitions. [2025-02-08 05:06:28,439 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 892 transitions. Word has length 98 [2025-02-08 05:06:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:28,439 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 892 transitions. [2025-02-08 05:06:28,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 892 transitions. [2025-02-08 05:06:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-02-08 05:06:28,441 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:28,441 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:28,453 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 [2025-02-08 05:06:28,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:28,643 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:28,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1512914785, now seen corresponding path program 1 times [2025-02-08 05:06:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980741013] [2025-02-08 05:06:28,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:28,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 05:06:28,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 05:06:28,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:28,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 05:06:29,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980741013] [2025-02-08 05:06:29,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980741013] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:06:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546121131] [2025-02-08 05:06:29,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:29,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:29,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:06:29,161 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) [2025-02-08 05:06:29,164 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 [2025-02-08 05:06:29,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 05:06:29,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 05:06:29,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:29,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:29,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 05:06:29,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:06:29,492 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 11 treesize of output 7 [2025-02-08 05:06:29,509 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 22 treesize of output 7 [2025-02-08 05:06:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:06:30,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:06:30,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546121131] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:30,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:06:30,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 14 [2025-02-08 05:06:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424505410] [2025-02-08 05:06:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:30,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 05:06:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:30,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 05:06:30,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-02-08 05:06:30,283 INFO L87 Difference]: Start difference. First operand 631 states and 892 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:31,743 INFO L93 Difference]: Finished difference Result 1531 states and 2172 transitions. [2025-02-08 05:06:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 05:06:31,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2025-02-08 05:06:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:31,748 INFO L225 Difference]: With dead ends: 1531 [2025-02-08 05:06:31,748 INFO L226 Difference]: Without dead ends: 947 [2025-02-08 05:06:31,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-02-08 05:06:31,751 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 666 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:31,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2272 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 05:06:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2025-02-08 05:06:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 647. [2025-02-08 05:06:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 622 states have (on average 1.4228295819935692) internal successors, (885), 637 states have internal predecessors, (885), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:06:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 912 transitions. [2025-02-08 05:06:31,776 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 912 transitions. Word has length 99 [2025-02-08 05:06:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:31,778 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 912 transitions. [2025-02-08 05:06:31,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 912 transitions. [2025-02-08 05:06:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 05:06:31,781 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:31,781 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:31,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 05:06:31,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:31,982 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:31,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash -25111952, now seen corresponding path program 1 times [2025-02-08 05:06:31,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:31,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304130882] [2025-02-08 05:06:31,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:32,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-08 05:06:32,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 05:06:32,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:32,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:06:32,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:32,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304130882] [2025-02-08 05:06:32,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304130882] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:32,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:06:32,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 05:06:32,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662371647] [2025-02-08 05:06:32,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:32,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 05:06:32,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:32,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 05:06:32,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 05:06:32,379 INFO L87 Difference]: Start difference. First operand 647 states and 912 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:32,781 INFO L93 Difference]: Finished difference Result 1248 states and 1771 transitions. [2025-02-08 05:06:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 05:06:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2025-02-08 05:06:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:32,789 INFO L225 Difference]: With dead ends: 1248 [2025-02-08 05:06:32,789 INFO L226 Difference]: Without dead ends: 657 [2025-02-08 05:06:32,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 05:06:32,793 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 14 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:32,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2582 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 05:06:32,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2025-02-08 05:06:32,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2025-02-08 05:06:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 630 states have (on average 1.4206349206349207) internal successors, (895), 645 states have internal predecessors, (895), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:06:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 922 transitions. [2025-02-08 05:06:32,816 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 922 transitions. Word has length 100 [2025-02-08 05:06:32,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:32,816 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 922 transitions. [2025-02-08 05:06:32,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 922 transitions. [2025-02-08 05:06:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 05:06:32,817 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:32,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:32,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 05:06:32,817 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:32,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1463110068, now seen corresponding path program 1 times [2025-02-08 05:06:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108226266] [2025-02-08 05:06:32,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:32,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-08 05:06:32,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 05:06:32,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:32,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:06:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108226266] [2025-02-08 05:06:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108226266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:33,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:06:33,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 05:06:33,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853361396] [2025-02-08 05:06:33,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:33,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 05:06:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:33,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 05:06:33,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 05:06:33,168 INFO L87 Difference]: Start difference. First operand 655 states and 922 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:33,515 INFO L93 Difference]: Finished difference Result 1263 states and 1791 transitions. [2025-02-08 05:06:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 05:06:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2025-02-08 05:06:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:33,519 INFO L225 Difference]: With dead ends: 1263 [2025-02-08 05:06:33,519 INFO L226 Difference]: Without dead ends: 661 [2025-02-08 05:06:33,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 05:06:33,521 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 9 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:33,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2172 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 05:06:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-02-08 05:06:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2025-02-08 05:06:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 636 states have (on average 1.4166666666666667) internal successors, (901), 651 states have internal predecessors, (901), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:06:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 928 transitions. [2025-02-08 05:06:33,542 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 928 transitions. Word has length 100 [2025-02-08 05:06:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:33,543 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 928 transitions. [2025-02-08 05:06:33,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 928 transitions. [2025-02-08 05:06:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-08 05:06:33,544 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:33,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:33,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 05:06:33,544 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:33,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1750088922, now seen corresponding path program 1 times [2025-02-08 05:06:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416566943] [2025-02-08 05:06:33,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:33,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:33,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 05:06:33,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 05:06:33,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:33,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 05:06:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416566943] [2025-02-08 05:06:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416566943] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:06:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092663109] [2025-02-08 05:06:33,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:33,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:33,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:06:33,950 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) [2025-02-08 05:06:33,954 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 [2025-02-08 05:06:34,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 05:06:34,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 05:06:34,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:34,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:34,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 05:06:34,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:06:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:06:34,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:06:34,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092663109] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:34,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:06:34,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 05:06:34,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592833573] [2025-02-08 05:06:34,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:34,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 05:06:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:34,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 05:06:34,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 05:06:34,395 INFO L87 Difference]: Start difference. First operand 661 states and 928 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:06:34,832 INFO L93 Difference]: Finished difference Result 1279 states and 1808 transitions. [2025-02-08 05:06:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 05:06:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2025-02-08 05:06:34,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:06:34,837 INFO L225 Difference]: With dead ends: 1279 [2025-02-08 05:06:34,837 INFO L226 Difference]: Without dead ends: 667 [2025-02-08 05:06:34,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-08 05:06:34,840 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 42 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 05:06:34,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2603 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 05:06:34,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2025-02-08 05:06:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 649. [2025-02-08 05:06:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 624 states have (on average 1.4150641025641026) internal successors, (883), 639 states have internal predecessors, (883), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:06:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 910 transitions. [2025-02-08 05:06:34,865 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 910 transitions. Word has length 101 [2025-02-08 05:06:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:06:34,865 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 910 transitions. [2025-02-08 05:06:34,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 910 transitions. [2025-02-08 05:06:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-08 05:06:34,868 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:06:34,868 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:06:34,879 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 [2025-02-08 05:06:35,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:35,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:06:35,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:06:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash -510915853, now seen corresponding path program 1 times [2025-02-08 05:06:35,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:06:35,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571070590] [2025-02-08 05:06:35,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:35,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:06:35,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 05:06:35,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 05:06:35,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:35,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 05:06:35,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:06:35,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571070590] [2025-02-08 05:06:35,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571070590] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:06:35,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753661118] [2025-02-08 05:06:35,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:06:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:06:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:06:35,433 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) [2025-02-08 05:06:35,435 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 [2025-02-08 05:06:35,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 05:06:35,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 05:06:35,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:06:35,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:06:35,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 05:06:35,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:06:50,105 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-08 05:06:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:06:55,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:06:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753661118] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:06:55,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:06:55,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 05:06:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878365699] [2025-02-08 05:06:55,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:06:55,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 05:06:55,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:06:55,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 05:06:55,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 05:06:55,429 INFO L87 Difference]: Start difference. First operand 649 states and 910 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:06:58,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-02-08 05:06:59,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-02-08 05:07:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:07:00,884 INFO L93 Difference]: Finished difference Result 1247 states and 1763 transitions. [2025-02-08 05:07:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 05:07:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2025-02-08 05:07:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:07:00,888 INFO L225 Difference]: With dead ends: 1247 [2025-02-08 05:07:00,888 INFO L226 Difference]: Without dead ends: 659 [2025-02-08 05:07:00,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 05:07:00,891 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 12 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-02-08 05:07:00,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2588 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-02-08 05:07:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-02-08 05:07:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 649. [2025-02-08 05:07:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 624 states have (on average 1.4150641025641026) internal successors, (883), 639 states have internal predecessors, (883), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:07:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 910 transitions. [2025-02-08 05:07:00,918 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 910 transitions. Word has length 101 [2025-02-08 05:07:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:07:00,920 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 910 transitions. [2025-02-08 05:07:00,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 910 transitions. [2025-02-08 05:07:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-08 05:07:00,921 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:07:00,921 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:07:00,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 05:07:01,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 05:07:01,122 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:07:01,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:07:01,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1027358294, now seen corresponding path program 1 times [2025-02-08 05:07:01,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:07:01,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566188110] [2025-02-08 05:07:01,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:01,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:07:01,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 05:07:01,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 05:07:01,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:01,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:07:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:07:01,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566188110] [2025-02-08 05:07:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566188110] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:07:01,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:07:01,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 05:07:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861376272] [2025-02-08 05:07:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:07:01,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 05:07:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:07:01,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 05:07:01,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 05:07:01,593 INFO L87 Difference]: Start difference. First operand 649 states and 910 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:07:02,329 INFO L93 Difference]: Finished difference Result 1269 states and 1792 transitions. [2025-02-08 05:07:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 05:07:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-02-08 05:07:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:07:02,332 INFO L225 Difference]: With dead ends: 1269 [2025-02-08 05:07:02,333 INFO L226 Difference]: Without dead ends: 681 [2025-02-08 05:07:02,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 05:07:02,336 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 23 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3909 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 05:07:02,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3909 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 05:07:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-02-08 05:07:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 669. [2025-02-08 05:07:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 644 states have (on average 1.4083850931677018) internal successors, (907), 659 states have internal predecessors, (907), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:07:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 934 transitions. [2025-02-08 05:07:02,360 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 934 transitions. Word has length 103 [2025-02-08 05:07:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:07:02,360 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 934 transitions. [2025-02-08 05:07:02,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 934 transitions. [2025-02-08 05:07:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-08 05:07:02,362 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:07:02,362 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:07:02,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 05:07:02,363 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:07:02,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:07:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash -5115572, now seen corresponding path program 1 times [2025-02-08 05:07:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:07:02,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790234083] [2025-02-08 05:07:02,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:07:02,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 05:07:02,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 05:07:02,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:02,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 05:07:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:07:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790234083] [2025-02-08 05:07:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790234083] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:07:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420583049] [2025-02-08 05:07:02,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:07:02,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:07:02,698 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) [2025-02-08 05:07:02,701 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 [2025-02-08 05:07:02,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 05:07:03,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 05:07:03,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:03,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:03,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 05:07:03,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:07:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 05:07:03,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:07:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420583049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:07:03,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:07:03,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-02-08 05:07:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843359926] [2025-02-08 05:07:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:07:03,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 05:07:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:07:03,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 05:07:03,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 05:07:03,707 INFO L87 Difference]: Start difference. First operand 669 states and 934 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:07:04,874 INFO L93 Difference]: Finished difference Result 1297 states and 1826 transitions. [2025-02-08 05:07:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 05:07:04,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-02-08 05:07:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:07:04,878 INFO L225 Difference]: With dead ends: 1297 [2025-02-08 05:07:04,878 INFO L226 Difference]: Without dead ends: 699 [2025-02-08 05:07:04,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 05:07:04,880 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 17 mSDsluCounter, 3428 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3912 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:07:04,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3912 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 05:07:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-02-08 05:07:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2025-02-08 05:07:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 668 states have (on average 1.402694610778443) internal successors, (937), 683 states have internal predecessors, (937), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 05:07:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 964 transitions. [2025-02-08 05:07:04,904 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 964 transitions. Word has length 103 [2025-02-08 05:07:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:07:04,904 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 964 transitions. [2025-02-08 05:07:04,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 964 transitions. [2025-02-08 05:07:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-08 05:07:04,907 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:07:04,907 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:07:04,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 05:07:05,108 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,SelfDestructingSolverStorable11 [2025-02-08 05:07:05,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:07:05,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:07:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash -228858832, now seen corresponding path program 1 times [2025-02-08 05:07:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:07:05,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396237627] [2025-02-08 05:07:05,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:07:05,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 05:07:05,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 05:07:05,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:05,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 05:07:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:07:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396237627] [2025-02-08 05:07:05,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396237627] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:07:05,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972008270] [2025-02-08 05:07:05,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:05,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:07:05,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:07:05,346 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) [2025-02-08 05:07:05,348 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 [2025-02-08 05:07:05,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 05:07:05,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 05:07:05,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:05,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:05,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 05:07:05,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:07:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:07:05,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:07:05,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972008270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:07:05,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:07:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2025-02-08 05:07:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773038585] [2025-02-08 05:07:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:07:05,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 05:07:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:07:05,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 05:07:05,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:07:05,816 INFO L87 Difference]: Start difference. First operand 693 states and 964 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 05:07:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:07:05,927 INFO L93 Difference]: Finished difference Result 1269 states and 1779 transitions. [2025-02-08 05:07:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 05:07:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2025-02-08 05:07:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:07:05,935 INFO L225 Difference]: With dead ends: 1269 [2025-02-08 05:07:05,935 INFO L226 Difference]: Without dead ends: 696 [2025-02-08 05:07:05,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 05:07:05,937 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 0 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 05:07:05,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1472 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 05:07:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2025-02-08 05:07:05,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2025-02-08 05:07:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 670 states have (on average 1.4029850746268657) internal successors, (940), 686 states have internal predecessors, (940), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 05:07:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 968 transitions. [2025-02-08 05:07:05,960 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 968 transitions. Word has length 103 [2025-02-08 05:07:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:07:05,960 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 968 transitions. [2025-02-08 05:07:05,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 05:07:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 968 transitions. [2025-02-08 05:07:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-08 05:07:05,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:07:05,965 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:07:05,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 05:07:06,165 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,SelfDestructingSolverStorable12 [2025-02-08 05:07:06,166 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:07:06,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:07:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash 231687732, now seen corresponding path program 1 times [2025-02-08 05:07:06,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:07:06,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088055759] [2025-02-08 05:07:06,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:06,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:07:06,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-08 05:07:06,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-08 05:07:06,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:06,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 05:07:06,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:07:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088055759] [2025-02-08 05:07:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088055759] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:07:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129558628] [2025-02-08 05:07:06,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:06,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:07:06,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:07:06,479 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) [2025-02-08 05:07:06,482 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 [2025-02-08 05:07:06,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-08 05:07:06,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-08 05:07:06,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:06,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:06,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 05:07:06,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:07:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 05:07:07,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 05:07:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129558628] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:07:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 05:07:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2025-02-08 05:07:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330407986] [2025-02-08 05:07:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:07:07,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 05:07:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:07:07,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 05:07:07,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 05:07:07,087 INFO L87 Difference]: Start difference. First operand 696 states and 968 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 05:07:07,710 INFO L93 Difference]: Finished difference Result 1319 states and 1852 transitions. [2025-02-08 05:07:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 05:07:07,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2025-02-08 05:07:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 05:07:07,714 INFO L225 Difference]: With dead ends: 1319 [2025-02-08 05:07:07,714 INFO L226 Difference]: Without dead ends: 706 [2025-02-08 05:07:07,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 05:07:07,716 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 10 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 05:07:07,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2588 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 05:07:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2025-02-08 05:07:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 696. [2025-02-08 05:07:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 670 states have (on average 1.4029850746268657) internal successors, (940), 686 states have internal predecessors, (940), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 05:07:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 968 transitions. [2025-02-08 05:07:07,736 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 968 transitions. Word has length 105 [2025-02-08 05:07:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 05:07:07,736 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 968 transitions. [2025-02-08 05:07:07,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 05:07:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 968 transitions. [2025-02-08 05:07:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-08 05:07:07,738 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 05:07:07,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:07:07,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 05:07:07,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:07:07,939 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 05:07:07,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:07:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1983997555, now seen corresponding path program 1 times [2025-02-08 05:07:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:07:07,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970166808] [2025-02-08 05:07:07,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:07,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:07:07,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-08 05:07:08,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-08 05:07:08,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:08,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 05:07:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:07:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970166808] [2025-02-08 05:07:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970166808] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 05:07:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663658021] [2025-02-08 05:07:08,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:07:08,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 05:07:08,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:07:08,258 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) [2025-02-08 05:07:08,260 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 [2025-02-08 05:07:08,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-08 05:07:09,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-08 05:07:09,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:07:09,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:07:09,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 119 conjuncts are in the unsatisfiable core [2025-02-08 05:07:09,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 05:07:09,175 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 [2025-02-08 05:07:09,410 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2025-02-08 05:07:09,411 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 25 treesize of output 29 [2025-02-08 05:07:09,421 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 15 treesize of output 1 [2025-02-08 05:07:09,425 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 11 treesize of output 7 [2025-02-08 05:07:09,521 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 18 treesize of output 10 [2025-02-08 05:07:09,527 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 7 treesize of output 3 [2025-02-08 05:07:09,670 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-08 05:07:09,670 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 50 treesize of output 45 [2025-02-08 05:07:09,679 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 24 treesize of output 11 [2025-02-08 05:07:14,403 INFO L224 Elim1Store]: Index analysis took 223 ms