./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.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_JEN_test9-1.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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 04:55:59,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 04:56:00,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 04:56:00,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 04:56:00,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 04:56:00,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 04:56:00,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 04:56:00,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 04:56:00,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 04:56:00,062 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 04:56:00,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 04:56:00,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 04:56:00,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 04:56:00,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 04:56:00,064 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 04:56:00,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 04:56:00,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 04:56:00,064 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 04:56:00,065 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 04:56:00,066 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 04:56:00,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 04:56:00,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 04:56:00,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 04:56:00,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:56:00,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 04:56:00,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 04:56:00,067 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 -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2025-02-08 04:56:00,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 04:56:00,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 04:56:00,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 04:56:00,262 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 04:56:00,262 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 04:56:00,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2025-02-08 04:56:01,414 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3a52ee4a9/6b71762821fd4d4db255a9b52fd67ab4/FLAG0a3e85b94 [2025-02-08 04:56:01,777 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 04:56:01,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2025-02-08 04:56:01,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3a52ee4a9/6b71762821fd4d4db255a9b52fd67ab4/FLAG0a3e85b94 [2025-02-08 04:56:01,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3a52ee4a9/6b71762821fd4d4db255a9b52fd67ab4 [2025-02-08 04:56:01,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 04:56:01,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 04:56:01,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 04:56:01,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 04:56:01,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 04:56:01,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:56:01" (1/1) ... [2025-02-08 04:56:01,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c453938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:01, skipping insertion in model container [2025-02-08 04:56:01,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:56:01" (1/1) ... [2025-02-08 04:56:02,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 04:56:02,306 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_JEN_test9-1.i[33021,33034] [2025-02-08 04:56:02,446 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_JEN_test9-1.i[84583,84596] [2025-02-08 04:56:02,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:56:02,463 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 04:56:02,506 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_JEN_test9-1.i[33021,33034] [2025-02-08 04:56:02,613 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_JEN_test9-1.i[84583,84596] [2025-02-08 04:56:02,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:56:02,645 INFO L204 MainTranslator]: Completed translation [2025-02-08 04:56:02,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02 WrapperNode [2025-02-08 04:56:02,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 04:56:02,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 04:56:02,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 04:56:02,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 04:56:02,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,776 INFO L138 Inliner]: procedures = 177, calls = 722, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3244 [2025-02-08 04:56:02,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 04:56:02,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 04:56:02,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 04:56:02,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 04:56:02,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,887 INFO L175 MemorySlicer]: Split 208 memory accesses to 3 slices as follows [2, 172, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2025-02-08 04:56:02,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,925 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 04:56:02,962 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 04:56:02,962 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 04:56:02,962 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 04:56:02,963 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (1/1) ... [2025-02-08 04:56:02,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:56:02,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:56:02,995 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 04:56:03,000 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 04:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 04:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 04:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 04:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 04:56:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 04:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 04:56:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 04:56:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 04:56:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 04:56:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 04:56:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 04:56:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 04:56:03,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 04:56:03,138 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 04:56:03,139 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 04:56:05,041 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: 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 04:56:05,208 INFO L? ?]: Removed 796 outVars from TransFormulas that were not future-live. [2025-02-08 04:56:05,208 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 04:56:05,272 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 04:56:05,273 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-08 04:56:05,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:56:05 BoogieIcfgContainer [2025-02-08 04:56:05,273 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 04:56:05,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 04:56:05,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 04:56:05,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 04:56:05,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 04:56:01" (1/3) ... [2025-02-08 04:56:05,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4540e43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:56:05, skipping insertion in model container [2025-02-08 04:56:05,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:56:02" (2/3) ... [2025-02-08 04:56:05,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4540e43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:56:05, skipping insertion in model container [2025-02-08 04:56:05,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:56:05" (3/3) ... [2025-02-08 04:56:05,282 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-1.i [2025-02-08 04:56:05,294 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 04:56:05,295 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test9-1.i that has 5 procedures, 1374 locations, 1 initial locations, 33 loop locations, and 2 error locations. [2025-02-08 04:56:05,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 04:56:05,363 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;@623713f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 04:56:05,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 04:56:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 1366 states, 857 states have (on average 1.840140023337223) internal successors, (1577), 1359 states have internal predecessors, (1577), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-08 04:56:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 04:56:05,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:05,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:56:05,373 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:05,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:05,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1169923548, now seen corresponding path program 1 times [2025-02-08 04:56:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341590479] [2025-02-08 04:56:05,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:05,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 04:56:05,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 04:56:05,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:05,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:05,469 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 04:56:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341590479] [2025-02-08 04:56:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341590479] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:56:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634900204] [2025-02-08 04:56:05,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:05,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 04:56:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:05,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 04:56:05,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 04:56:05,489 INFO L87 Difference]: Start difference. First operand has 1366 states, 857 states have (on average 1.840140023337223) internal successors, (1577), 1359 states have internal predecessors, (1577), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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 04:56:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:05,679 INFO L93 Difference]: Finished difference Result 2731 states and 5665 transitions. [2025-02-08 04:56:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 04:56:05,681 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 04:56:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:05,705 INFO L225 Difference]: With dead ends: 2731 [2025-02-08 04:56:05,705 INFO L226 Difference]: Without dead ends: 1359 [2025-02-08 04:56:05,715 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 04:56:05,717 INFO L435 NwaCegarLoop]: 2486 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:05,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2486 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:56:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2025-02-08 04:56:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1359. [2025-02-08 04:56:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 853 states have (on average 1.776084407971864) internal successors, (1515), 1353 states have internal predecessors, (1515), 503 states have call successors, (503), 2 states have call predecessors, (503), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:56:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 2021 transitions. [2025-02-08 04:56:05,845 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 2021 transitions. Word has length 8 [2025-02-08 04:56:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:05,845 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 2021 transitions. [2025-02-08 04:56:05,845 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 04:56:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 2021 transitions. [2025-02-08 04:56:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 04:56:05,848 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:05,848 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 04:56:05,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 04:56:05,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:05,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 12516499, now seen corresponding path program 1 times [2025-02-08 04:56:05,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:05,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055465240] [2025-02-08 04:56:05,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:05,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 04:56:05,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 04:56:05,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:05,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:06,223 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 04:56:06,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055465240] [2025-02-08 04:56:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055465240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 04:56:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907287556] [2025-02-08 04:56:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:06,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:56:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:06,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:56:06,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:56:06,225 INFO L87 Difference]: Start difference. First operand 1359 states and 2021 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 04:56:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:06,980 INFO L93 Difference]: Finished difference Result 3869 states and 5768 transitions. [2025-02-08 04:56:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:56:06,981 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 04:56:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:06,993 INFO L225 Difference]: With dead ends: 3869 [2025-02-08 04:56:06,993 INFO L226 Difference]: Without dead ends: 2708 [2025-02-08 04:56:06,997 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 04:56:06,997 INFO L435 NwaCegarLoop]: 2000 mSDtfsCounter, 1503 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:06,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 5455 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 04:56:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2025-02-08 04:56:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 1361. [2025-02-08 04:56:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 855 states have (on average 1.774269005847953) internal successors, (1517), 1355 states have internal predecessors, (1517), 503 states have call successors, (503), 2 states have call predecessors, (503), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:56:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 2023 transitions. [2025-02-08 04:56:07,074 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 2023 transitions. Word has length 62 [2025-02-08 04:56:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:07,074 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 2023 transitions. [2025-02-08 04:56:07,074 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 04:56:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 2023 transitions. [2025-02-08 04:56:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 04:56:07,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:07,078 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:07,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 04:56:07,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:07,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:07,079 INFO L85 PathProgramCache]: Analyzing trace with hash -428969254, now seen corresponding path program 1 times [2025-02-08 04:56:07,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444052245] [2025-02-08 04:56:07,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:07,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 04:56:07,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 04:56:07,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:07,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:56:07,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:07,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444052245] [2025-02-08 04:56:07,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444052245] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:07,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:07,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:56:07,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030561565] [2025-02-08 04:56:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:07,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:56:07,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:07,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:56:07,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:56:07,424 INFO L87 Difference]: Start difference. First operand 1361 states and 2023 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 04:56:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:07,579 INFO L93 Difference]: Finished difference Result 2677 states and 3977 transitions. [2025-02-08 04:56:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:56:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2025-02-08 04:56:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:07,587 INFO L225 Difference]: With dead ends: 2677 [2025-02-08 04:56:07,587 INFO L226 Difference]: Without dead ends: 1319 [2025-02-08 04:56:07,591 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 04:56:07,592 INFO L435 NwaCegarLoop]: 1888 mSDtfsCounter, 30 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:07,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 5645 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:56:07,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2025-02-08 04:56:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2025-02-08 04:56:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 813 states have (on average 1.7712177121771218) internal successors, (1440), 1313 states have internal predecessors, (1440), 503 states have call successors, (503), 2 states have call predecessors, (503), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:56:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1946 transitions. [2025-02-08 04:56:07,623 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1946 transitions. Word has length 137 [2025-02-08 04:56:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:07,624 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1946 transitions. [2025-02-08 04:56:07,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 04:56:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1946 transitions. [2025-02-08 04:56:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 04:56:07,626 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:07,626 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:07,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 04:56:07,628 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:07,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1388049684, now seen corresponding path program 1 times [2025-02-08 04:56:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122446064] [2025-02-08 04:56:07,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:07,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 04:56:07,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 04:56:07,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:07,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:56:07,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:07,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122446064] [2025-02-08 04:56:07,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122446064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:07,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:56:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427678039] [2025-02-08 04:56:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:07,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 04:56:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:07,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 04:56:07,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:56:07,827 INFO L87 Difference]: Start difference. First operand 1319 states and 1946 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 04:56:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:07,995 INFO L93 Difference]: Finished difference Result 3856 states and 5709 transitions. [2025-02-08 04:56:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 04:56:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 137 [2025-02-08 04:56:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:08,008 INFO L225 Difference]: With dead ends: 3856 [2025-02-08 04:56:08,009 INFO L226 Difference]: Without dead ends: 2540 [2025-02-08 04:56:08,012 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 04:56:08,013 INFO L435 NwaCegarLoop]: 2080 mSDtfsCounter, 1258 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:08,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 3972 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:56:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2025-02-08 04:56:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2038. [2025-02-08 04:56:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 1532 states have (on average 1.7996083550913837) internal successors, (2757), 2032 states have internal predecessors, (2757), 503 states have call successors, (503), 2 states have call predecessors, (503), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:56:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 3263 transitions. [2025-02-08 04:56:08,068 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 3263 transitions. Word has length 137 [2025-02-08 04:56:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:08,068 INFO L471 AbstractCegarLoop]: Abstraction has 2038 states and 3263 transitions. [2025-02-08 04:56:08,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 04:56:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 3263 transitions. [2025-02-08 04:56:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:56:08,071 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:08,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:08,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 04:56:08,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:08,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 315239395, now seen corresponding path program 1 times [2025-02-08 04:56:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097460471] [2025-02-08 04:56:08,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:08,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:56:08,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:56:08,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:08,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 04:56:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097460471] [2025-02-08 04:56:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097460471] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:56:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174599561] [2025-02-08 04:56:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:08,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:56:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:08,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:56:08,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:56:08,375 INFO L87 Difference]: Start difference. First operand 2038 states and 3263 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:08,518 INFO L93 Difference]: Finished difference Result 3747 states and 6065 transitions. [2025-02-08 04:56:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:56:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-02-08 04:56:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:08,531 INFO L225 Difference]: With dead ends: 3747 [2025-02-08 04:56:08,531 INFO L226 Difference]: Without dead ends: 1954 [2025-02-08 04:56:08,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:56:08,537 INFO L435 NwaCegarLoop]: 1814 mSDtfsCounter, 30 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:08,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 5423 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:56:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2025-02-08 04:56:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1954. [2025-02-08 04:56:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1448 states have (on average 1.7976519337016574) internal successors, (2603), 1948 states have internal predecessors, (2603), 503 states have call successors, (503), 2 states have call predecessors, (503), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:56:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3109 transitions. [2025-02-08 04:56:08,580 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3109 transitions. Word has length 152 [2025-02-08 04:56:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:08,580 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 3109 transitions. [2025-02-08 04:56:08,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3109 transitions. [2025-02-08 04:56:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:56:08,581 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:08,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:08,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 04:56:08,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:08,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1191062332, now seen corresponding path program 1 times [2025-02-08 04:56:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:08,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227781041] [2025-02-08 04:56:08,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:08,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:56:08,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:56:08,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:08,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:08,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:08,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227781041] [2025-02-08 04:56:08,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227781041] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:08,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 04:56:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023378453] [2025-02-08 04:56:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:08,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 04:56:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:08,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 04:56:08,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:56:08,802 INFO L87 Difference]: Start difference. First operand 1954 states and 3109 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:09,267 INFO L93 Difference]: Finished difference Result 4397 states and 6703 transitions. [2025-02-08 04:56:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:56:09,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-02-08 04:56:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:09,282 INFO L225 Difference]: With dead ends: 4397 [2025-02-08 04:56:09,282 INFO L226 Difference]: Without dead ends: 2532 [2025-02-08 04:56:09,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:56:09,287 INFO L435 NwaCegarLoop]: 1920 mSDtfsCounter, 4862 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4863 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:09,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4863 Valid, 4321 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:56:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2025-02-08 04:56:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1363. [2025-02-08 04:56:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 857 states have (on average 1.7246207701283547) internal successors, (1478), 1357 states have internal predecessors, (1478), 503 states have call successors, (503), 2 states have call predecessors, (503), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:56:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1984 transitions. [2025-02-08 04:56:09,352 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1984 transitions. Word has length 152 [2025-02-08 04:56:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:09,354 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 1984 transitions. [2025-02-08 04:56:09,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:09,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1984 transitions. [2025-02-08 04:56:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-08 04:56:09,356 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:09,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:09,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 04:56:09,357 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:09,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2085603150, now seen corresponding path program 1 times [2025-02-08 04:56:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300702693] [2025-02-08 04:56:09,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:09,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:09,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-08 04:56:09,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-08 04:56:09,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:09,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300702693] [2025-02-08 04:56:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300702693] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:56:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992927413] [2025-02-08 04:56:09,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:09,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:09,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:56:09,969 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 04:56:09,971 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 04:56:10,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-08 04:56:10,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-08 04:56:10,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:10,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:10,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 04:56:10,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:56:10,279 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 04:56:10,452 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:10,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:56:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:10,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992927413] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:56:10,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:56:10,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-02-08 04:56:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804971920] [2025-02-08 04:56:10,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:56:10,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 04:56:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:10,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 04:56:10,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:56:10,611 INFO L87 Difference]: Start difference. First operand 1363 states and 1984 transitions. Second operand has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:56:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:13,163 INFO L93 Difference]: Finished difference Result 5196 states and 7600 transitions. [2025-02-08 04:56:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 04:56:13,163 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 162 [2025-02-08 04:56:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:13,178 INFO L225 Difference]: With dead ends: 5196 [2025-02-08 04:56:13,179 INFO L226 Difference]: Without dead ends: 4077 [2025-02-08 04:56:13,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 316 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-08 04:56:13,182 INFO L435 NwaCegarLoop]: 1982 mSDtfsCounter, 4133 mSDsluCounter, 8880 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4137 SdHoareTripleChecker+Valid, 10862 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:13,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4137 Valid, 10862 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-08 04:56:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2025-02-08 04:56:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 1705. [2025-02-08 04:56:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1195 states have (on average 1.6150627615062763) internal successors, (1930), 1695 states have internal predecessors, (1930), 506 states have call successors, (506), 3 states have call predecessors, (506), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 04:56:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2442 transitions. [2025-02-08 04:56:13,283 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2442 transitions. Word has length 162 [2025-02-08 04:56:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:13,284 INFO L471 AbstractCegarLoop]: Abstraction has 1705 states and 2442 transitions. [2025-02-08 04:56:13,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:56:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2442 transitions. [2025-02-08 04:56:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2025-02-08 04:56:13,290 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:13,290 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2025-02-08 04:56:13,301 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 04:56:13,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:13,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:13,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 849388687, now seen corresponding path program 1 times [2025-02-08 04:56:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:13,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136039017] [2025-02-08 04:56:13,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:13,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:13,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-02-08 04:56:13,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-02-08 04:56:13,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:13,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:16,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:16,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136039017] [2025-02-08 04:56:16,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136039017] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:56:16,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816333648] [2025-02-08 04:56:16,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:16,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:16,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:56:16,033 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 04:56:16,034 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 04:56:16,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-02-08 04:56:16,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-02-08 04:56:16,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:16,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:16,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 04:56:16,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:56:16,554 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 04:56:16,684 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:16,769 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:16,853 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:16,942 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:16,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:56:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:17,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816333648] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:56:17,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:56:17,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2025-02-08 04:56:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414033949] [2025-02-08 04:56:17,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:56:17,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 04:56:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:17,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 04:56:17,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2025-02-08 04:56:17,418 INFO L87 Difference]: Start difference. First operand 1705 states and 2442 transitions. Second operand has 23 states, 23 states have (on average 43.34782608695652) internal successors, (997), 23 states have internal predecessors, (997), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:56:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:23,560 INFO L93 Difference]: Finished difference Result 10504 states and 15361 transitions. [2025-02-08 04:56:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 04:56:23,561 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 43.34782608695652) internal successors, (997), 23 states have internal predecessors, (997), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 387 [2025-02-08 04:56:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:23,606 INFO L225 Difference]: With dead ends: 10504 [2025-02-08 04:56:23,606 INFO L226 Difference]: Without dead ends: 9385 [2025-02-08 04:56:23,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 762 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2025-02-08 04:56:23,616 INFO L435 NwaCegarLoop]: 5746 mSDtfsCounter, 17091 mSDsluCounter, 38502 mSDsCounter, 0 mSdLazyCounter, 9880 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17101 SdHoareTripleChecker+Valid, 44248 SdHoareTripleChecker+Invalid, 10401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 9880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:23,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17101 Valid, 44248 Invalid, 10401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [521 Valid, 9880 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2025-02-08 04:56:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2025-02-08 04:56:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 2557. [2025-02-08 04:56:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2041 states have (on average 1.5012248897599216) internal successors, (3064), 2541 states have internal predecessors, (3064), 512 states have call successors, (512), 3 states have call predecessors, (512), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:56:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3588 transitions. [2025-02-08 04:56:23,772 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3588 transitions. Word has length 387 [2025-02-08 04:56:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:23,772 INFO L471 AbstractCegarLoop]: Abstraction has 2557 states and 3588 transitions. [2025-02-08 04:56:23,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.34782608695652) internal successors, (997), 23 states have internal predecessors, (997), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:56:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3588 transitions. [2025-02-08 04:56:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2025-02-08 04:56:23,783 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:23,784 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2025-02-08 04:56:23,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 04:56:23,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:23,988 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:23,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1909433455, now seen corresponding path program 2 times [2025-02-08 04:56:23,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:23,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202709655] [2025-02-08 04:56:23,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:56:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:24,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 837 statements into 2 equivalence classes. [2025-02-08 04:56:24,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 72 of 837 statements. [2025-02-08 04:56:24,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:56:24,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-08 04:56:24,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:24,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202709655] [2025-02-08 04:56:24,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202709655] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:24,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:24,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:56:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476774424] [2025-02-08 04:56:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:24,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:56:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:24,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:56:24,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:56:24,412 INFO L87 Difference]: Start difference. First operand 2557 states and 3588 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:24,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:24,845 INFO L93 Difference]: Finished difference Result 3680 states and 5252 transitions. [2025-02-08 04:56:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:56:24,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 837 [2025-02-08 04:56:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:24,863 INFO L225 Difference]: With dead ends: 3680 [2025-02-08 04:56:24,864 INFO L226 Difference]: Without dead ends: 2562 [2025-02-08 04:56:24,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:56:24,868 INFO L435 NwaCegarLoop]: 1818 mSDtfsCounter, 14 mSDsluCounter, 7008 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8826 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:24,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8826 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:56:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2025-02-08 04:56:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2559. [2025-02-08 04:56:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2043 states have (on average 1.500734214390602) internal successors, (3066), 2543 states have internal predecessors, (3066), 512 states have call successors, (512), 3 states have call predecessors, (512), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:56:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3590 transitions. [2025-02-08 04:56:25,023 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3590 transitions. Word has length 837 [2025-02-08 04:56:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:25,025 INFO L471 AbstractCegarLoop]: Abstraction has 2559 states and 3590 transitions. [2025-02-08 04:56:25,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3590 transitions. [2025-02-08 04:56:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-08 04:56:25,043 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:25,043 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2025-02-08 04:56:25,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 04:56:25,044 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:25,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1023575004, now seen corresponding path program 1 times [2025-02-08 04:56:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669455663] [2025-02-08 04:56:25,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:25,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 838 statements into 1 equivalence classes. [2025-02-08 04:56:25,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 838 of 838 statements. [2025-02-08 04:56:25,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:25,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669455663] [2025-02-08 04:56:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669455663] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:56:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020316306] [2025-02-08 04:56:33,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:56:33,709 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 04:56:33,711 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 04:56:34,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 838 statements into 1 equivalence classes. [2025-02-08 04:56:34,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 838 of 838 statements. [2025-02-08 04:56:34,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:34,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:34,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 04:56:34,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:56:34,907 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 04:56:35,158 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,253 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,339 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,423 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,507 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,591 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,675 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,765 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,855 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,940 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:35,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:56:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:36,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020316306] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:56:36,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:56:36,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 42 [2025-02-08 04:56:36,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098940471] [2025-02-08 04:56:36,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:56:36,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-08 04:56:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:36,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-08 04:56:36,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=1127, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 04:56:36,925 INFO L87 Difference]: Start difference. First operand 2559 states and 3590 transitions. Second operand has 42 states, 42 states have (on average 55.904761904761905) internal successors, (2348), 42 states have internal predecessors, (2348), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:56:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:51,872 INFO L93 Difference]: Finished difference Result 18920 states and 27605 transitions. [2025-02-08 04:56:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-08 04:56:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 55.904761904761905) internal successors, (2348), 42 states have internal predecessors, (2348), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 838 [2025-02-08 04:56:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:51,918 INFO L225 Difference]: With dead ends: 18920 [2025-02-08 04:56:51,918 INFO L226 Difference]: Without dead ends: 17799 [2025-02-08 04:56:51,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1717 GetRequests, 1653 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=2778, Unknown=0, NotChecked=0, Total=3906 [2025-02-08 04:56:51,926 INFO L435 NwaCegarLoop]: 11644 mSDtfsCounter, 33595 mSDsluCounter, 115978 mSDsCounter, 0 mSdLazyCounter, 33822 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33617 SdHoareTripleChecker+Valid, 127622 SdHoareTripleChecker+Invalid, 34366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 33822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:51,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33617 Valid, 127622 Invalid, 34366 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [544 Valid, 33822 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2025-02-08 04:56:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17799 states. [2025-02-08 04:56:52,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17799 to 4263. [2025-02-08 04:56:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 3735 states have (on average 1.4281124497991968) internal successors, (5334), 4235 states have internal predecessors, (5334), 524 states have call successors, (524), 3 states have call predecessors, (524), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:56:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 5882 transitions. [2025-02-08 04:56:52,166 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 5882 transitions. Word has length 838 [2025-02-08 04:56:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:52,168 INFO L471 AbstractCegarLoop]: Abstraction has 4263 states and 5882 transitions. [2025-02-08 04:56:52,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 55.904761904761905) internal successors, (2348), 42 states have internal predecessors, (2348), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:56:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 5882 transitions. [2025-02-08 04:56:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2025-02-08 04:56:52,191 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:52,192 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-08 04:56:52,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 04:56:52,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:52,396 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:52,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash 385213468, now seen corresponding path program 2 times [2025-02-08 04:56:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:52,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713614365] [2025-02-08 04:56:52,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:56:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:52,835 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1738 statements into 2 equivalence classes. [2025-02-08 04:56:52,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 73 of 1738 statements. [2025-02-08 04:56:52,848 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:56:52,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:56:52,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:52,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713614365] [2025-02-08 04:56:52,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713614365] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:52,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:52,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:56:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769741156] [2025-02-08 04:56:52,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:52,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:56:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:52,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:56:52,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:56:52,977 INFO L87 Difference]: Start difference. First operand 4263 states and 5882 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:53,206 INFO L93 Difference]: Finished difference Result 5383 states and 7540 transitions. [2025-02-08 04:56:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:56:53,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1738 [2025-02-08 04:56:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:53,218 INFO L225 Difference]: With dead ends: 5383 [2025-02-08 04:56:53,218 INFO L226 Difference]: Without dead ends: 4263 [2025-02-08 04:56:53,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:56:53,222 INFO L435 NwaCegarLoop]: 1822 mSDtfsCounter, 17 mSDsluCounter, 3529 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:53,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5351 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:56:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2025-02-08 04:56:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 4263. [2025-02-08 04:56:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 3735 states have (on average 1.4278447121820617) internal successors, (5333), 4235 states have internal predecessors, (5333), 524 states have call successors, (524), 3 states have call predecessors, (524), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:56:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 5881 transitions. [2025-02-08 04:56:53,366 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 5881 transitions. Word has length 1738 [2025-02-08 04:56:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:53,368 INFO L471 AbstractCegarLoop]: Abstraction has 4263 states and 5881 transitions. [2025-02-08 04:56:53,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:53,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 5881 transitions. [2025-02-08 04:56:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2025-02-08 04:56:53,383 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:53,384 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-08 04:56:53,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 04:56:53,385 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:53,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash -713583005, now seen corresponding path program 1 times [2025-02-08 04:56:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:53,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121053599] [2025-02-08 04:56:53,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:53,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1738 statements into 1 equivalence classes. [2025-02-08 04:56:54,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1738 of 1738 statements. [2025-02-08 04:56:54,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:54,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:56:56,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:56,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121053599] [2025-02-08 04:56:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121053599] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:56:56,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:56:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 04:56:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756110579] [2025-02-08 04:56:56,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:56:56,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:56:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:56,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:56:56,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:56:56,888 INFO L87 Difference]: Start difference. First operand 4263 states and 5881 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:56:57,243 INFO L93 Difference]: Finished difference Result 5388 states and 7546 transitions. [2025-02-08 04:56:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:56:57,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1738 [2025-02-08 04:56:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:56:57,254 INFO L225 Difference]: With dead ends: 5388 [2025-02-08 04:56:57,255 INFO L226 Difference]: Without dead ends: 4268 [2025-02-08 04:56:57,258 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 04:56:57,258 INFO L435 NwaCegarLoop]: 1813 mSDtfsCounter, 14 mSDsluCounter, 8779 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10592 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:56:57,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10592 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:56:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2025-02-08 04:56:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4267. [2025-02-08 04:56:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 3739 states have (on average 1.427654453062316) internal successors, (5338), 4239 states have internal predecessors, (5338), 524 states have call successors, (524), 3 states have call predecessors, (524), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:56:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 5886 transitions. [2025-02-08 04:56:57,435 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 5886 transitions. Word has length 1738 [2025-02-08 04:56:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:56:57,436 INFO L471 AbstractCegarLoop]: Abstraction has 4267 states and 5886 transitions. [2025-02-08 04:56:57,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:56:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 5886 transitions. [2025-02-08 04:56:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-08 04:56:57,451 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:56:57,451 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-08 04:56:57,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 04:56:57,452 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:56:57,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:56:57,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1466519378, now seen corresponding path program 1 times [2025-02-08 04:56:57,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:56:57,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216088762] [2025-02-08 04:56:57,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:57,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:56:57,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:56:58,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:56:58,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:58,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:57:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:57:00,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:57:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216088762] [2025-02-08 04:57:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216088762] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:57:00,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:57:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:57:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486561113] [2025-02-08 04:57:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:57:00,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:57:00,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:57:00,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:57:00,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:57:00,667 INFO L87 Difference]: Start difference. First operand 4267 states and 5886 transitions. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:57:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:57:00,968 INFO L93 Difference]: Finished difference Result 5394 states and 7553 transitions. [2025-02-08 04:57:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:57:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-08 04:57:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:57:00,979 INFO L225 Difference]: With dead ends: 5394 [2025-02-08 04:57:00,979 INFO L226 Difference]: Without dead ends: 4270 [2025-02-08 04:57:00,982 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 04:57:00,983 INFO L435 NwaCegarLoop]: 1823 mSDtfsCounter, 8 mSDsluCounter, 5289 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7112 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:57:00,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7112 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:57:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2025-02-08 04:57:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 4270. [2025-02-08 04:57:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 3742 states have (on average 1.4273115980758952) internal successors, (5341), 4242 states have internal predecessors, (5341), 524 states have call successors, (524), 3 states have call predecessors, (524), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:57:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 5889 transitions. [2025-02-08 04:57:01,123 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 5889 transitions. Word has length 1739 [2025-02-08 04:57:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:57:01,124 INFO L471 AbstractCegarLoop]: Abstraction has 4270 states and 5889 transitions. [2025-02-08 04:57:01,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:57:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 5889 transitions. [2025-02-08 04:57:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-08 04:57:01,140 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:57:01,140 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-08 04:57:01,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 04:57:01,141 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:57:01,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:57:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash 786569910, now seen corresponding path program 1 times [2025-02-08 04:57:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:57:01,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244965971] [2025-02-08 04:57:01,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:57:01,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:57:01,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:57:02,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:57:02,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:57:02,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:57:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:57:05,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:57:05,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244965971] [2025-02-08 04:57:05,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244965971] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:57:05,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:57:05,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 04:57:05,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536821835] [2025-02-08 04:57:05,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:57:05,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 04:57:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:57:05,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 04:57:05,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:57:05,563 INFO L87 Difference]: Start difference. First operand 4270 states and 5889 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:57:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:57:06,067 INFO L93 Difference]: Finished difference Result 5410 states and 7575 transitions. [2025-02-08 04:57:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 04:57:06,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-08 04:57:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:57:06,079 INFO L225 Difference]: With dead ends: 5410 [2025-02-08 04:57:06,079 INFO L226 Difference]: Without dead ends: 4283 [2025-02-08 04:57:06,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:57:06,083 INFO L435 NwaCegarLoop]: 1814 mSDtfsCounter, 33 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 14166 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:57:06,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 14166 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:57:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2025-02-08 04:57:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4280. [2025-02-08 04:57:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3752 states have (on average 1.4272388059701493) internal successors, (5355), 4252 states have internal predecessors, (5355), 524 states have call successors, (524), 3 states have call predecessors, (524), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:57:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5903 transitions. [2025-02-08 04:57:06,283 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5903 transitions. Word has length 1739 [2025-02-08 04:57:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:57:06,284 INFO L471 AbstractCegarLoop]: Abstraction has 4280 states and 5903 transitions. [2025-02-08 04:57:06,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:57:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5903 transitions. [2025-02-08 04:57:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-08 04:57:06,299 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:57:06,300 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-08 04:57:06,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 04:57:06,300 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:57:06,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:57:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1574771954, now seen corresponding path program 1 times [2025-02-08 04:57:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:57:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177705469] [2025-02-08 04:57:06,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:57:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:57:06,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:57:07,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:57:07,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:57:07,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat