./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/combinations/Problem05_label42+token_ring.03.cil-2.c -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 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:07:17,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:07:17,259 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:07:17,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:07:17,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:07:17,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:07:17,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:07:17,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:07:17,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:07:17,287 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:07:17,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:07:17,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:07:17,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:07:17,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:07:17,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:07:17,289 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:07:17,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:07:17,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:07:17,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:07:17,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:07:17,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:07:17,290 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 -> 416d3b74bdc0e830f927a3018e8747e6a310d2a238902dccf396a8065404f3af [2025-02-05 17:07:17,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:07:17,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:07:17,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:07:17,571 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:07:17,572 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:07:17,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2025-02-05 17:07:19,004 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd2d2023a/dec69d83add446fabd6321e43c3a9ced/FLAG2bcd5c5c7 [2025-02-05 17:07:19,738 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:07:19,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-2.c [2025-02-05 17:07:19,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd2d2023a/dec69d83add446fabd6321e43c3a9ced/FLAG2bcd5c5c7 [2025-02-05 17:07:20,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd2d2023a/dec69d83add446fabd6321e43c3a9ced [2025-02-05 17:07:20,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:07:20,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:07:20,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:07:20,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:07:20,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:07:20,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:07:20" (1/1) ... [2025-02-05 17:07:20,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572e1060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:20, skipping insertion in model container [2025-02-05 17:07:20,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:07:20" (1/1) ... [2025-02-05 17:07:20,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:07:21,320 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/combinations/Problem05_label42+token_ring.03.cil-2.c[378560,378573] [2025-02-05 17:07:21,347 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/combinations/Problem05_label42+token_ring.03.cil-2.c[383339,383352] [2025-02-05 17:07:21,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:07:21,543 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:07:22,050 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/combinations/Problem05_label42+token_ring.03.cil-2.c[378560,378573] [2025-02-05 17:07:22,056 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/combinations/Problem05_label42+token_ring.03.cil-2.c[383339,383352] [2025-02-05 17:07:22,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:07:22,109 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:07:22,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22 WrapperNode [2025-02-05 17:07:22,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:07:22,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:07:22,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:07:22,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:07:22,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,437 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12672 [2025-02-05 17:07:22,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:07:22,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:07:22,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:07:22,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:07:22,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,586 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 17:07:22,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,901 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:22,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:23,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:07:23,006 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:07:23,006 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:07:23,006 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:07:23,007 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (1/1) ... [2025-02-05 17:07:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:07:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:23,036 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) [2025-02-05 17:07:23,041 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 [2025-02-05 17:07:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:07:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 17:07:23,071 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 17:07:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 17:07:23,071 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 17:07:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 17:07:23,071 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 17:07:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 17:07:23,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 17:07:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 17:07:23,072 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 17:07:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 17:07:23,072 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 17:07:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:07:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:07:23,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:07:23,146 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:07:23,148 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:07:29,871 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-02-05 17:07:29,872 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-02-05 17:07:29,873 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-02-05 17:07:29,873 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-02-05 17:07:29,874 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-02-05 17:07:29,874 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-02-05 17:07:29,874 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-02-05 17:07:30,178 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2025-02-05 17:07:30,179 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:07:30,228 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:07:30,231 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:07:30,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:07:30 BoogieIcfgContainer [2025-02-05 17:07:30,232 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:07:30,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:07:30,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:07:30,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:07:30,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:07:20" (1/3) ... [2025-02-05 17:07:30,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb28bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:07:30, skipping insertion in model container [2025-02-05 17:07:30,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:07:22" (2/3) ... [2025-02-05 17:07:30,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb28bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:07:30, skipping insertion in model container [2025-02-05 17:07:30,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:07:30" (3/3) ... [2025-02-05 17:07:30,244 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-2.c [2025-02-05 17:07:30,261 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:07:30,268 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.03.cil-2.c that has 7 procedures, 2348 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2025-02-05 17:07:30,385 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:07:30,403 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;@410e28d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:07:30,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:07:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 2322 states have (on average 1.8496985357450473) internal successors, (4295), 2325 states have internal predecessors, (4295), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-05 17:07:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:30,435 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:30,436 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:30,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:30,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash -487538790, now seen corresponding path program 1 times [2025-02-05 17:07:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758493635] [2025-02-05 17:07:30,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:30,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:30,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:30,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:30,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:30,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:30,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758493635] [2025-02-05 17:07:30,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758493635] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:30,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:30,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:07:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137741800] [2025-02-05 17:07:30,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:30,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:07:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:30,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:07:30,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:07:30,853 INFO L87 Difference]: Start difference. First operand has 2348 states, 2322 states have (on average 1.8496985357450473) internal successors, (4295), 2325 states have internal predecessors, (4295), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:31,396 INFO L93 Difference]: Finished difference Result 4849 states and 8893 transitions. [2025-02-05 17:07:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:07:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:31,423 INFO L225 Difference]: With dead ends: 4849 [2025-02-05 17:07:31,424 INFO L226 Difference]: Without dead ends: 2442 [2025-02-05 17:07:31,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:31,437 INFO L435 NwaCegarLoop]: 4210 mSDtfsCounter, 4419 mSDsluCounter, 8509 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 12719 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:31,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4430 Valid, 12719 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:07:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2025-02-05 17:07:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2431. [2025-02-05 17:07:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2387 states have (on average 1.8236279849183075) internal successors, (4353), 2390 states have internal predecessors, (4353), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-02-05 17:07:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4412 transitions. [2025-02-05 17:07:31,585 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4412 transitions. Word has length 79 [2025-02-05 17:07:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:31,589 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4412 transitions. [2025-02-05 17:07:31,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4412 transitions. [2025-02-05 17:07:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:31,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:31,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:31,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:07:31,591 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:31,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1778468956, now seen corresponding path program 1 times [2025-02-05 17:07:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:31,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510947001] [2025-02-05 17:07:31,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:31,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:31,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:31,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:31,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:31,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510947001] [2025-02-05 17:07:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510947001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:07:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588872634] [2025-02-05 17:07:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:31,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:07:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:31,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:07:31,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:07:31,775 INFO L87 Difference]: Start difference. First operand 2431 states and 4412 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:31,962 INFO L93 Difference]: Finished difference Result 2754 states and 4895 transitions. [2025-02-05 17:07:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:07:31,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:31,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:31,976 INFO L225 Difference]: With dead ends: 2754 [2025-02-05 17:07:31,976 INFO L226 Difference]: Without dead ends: 2455 [2025-02-05 17:07:31,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:31,981 INFO L435 NwaCegarLoop]: 4129 mSDtfsCounter, 4248 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 12322 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:31,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4259 Valid, 12322 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:07:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2025-02-05 17:07:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2431. [2025-02-05 17:07:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2387 states have (on average 1.8227901131126938) internal successors, (4351), 2390 states have internal predecessors, (4351), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-02-05 17:07:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4410 transitions. [2025-02-05 17:07:32,079 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4410 transitions. Word has length 79 [2025-02-05 17:07:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:32,079 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4410 transitions. [2025-02-05 17:07:32,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4410 transitions. [2025-02-05 17:07:32,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:32,082 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:32,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:32,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:07:32,083 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:32,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -396211141, now seen corresponding path program 1 times [2025-02-05 17:07:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817135538] [2025-02-05 17:07:32,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:32,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:32,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:32,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:32,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:32,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817135538] [2025-02-05 17:07:32,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817135538] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:32,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:32,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:07:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526129412] [2025-02-05 17:07:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:32,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:07:32,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:32,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:07:32,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:32,327 INFO L87 Difference]: Start difference. First operand 2431 states and 4410 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:32,854 INFO L93 Difference]: Finished difference Result 2904 states and 5103 transitions. [2025-02-05 17:07:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:07:32,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:32,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:32,868 INFO L225 Difference]: With dead ends: 2904 [2025-02-05 17:07:32,869 INFO L226 Difference]: Without dead ends: 2605 [2025-02-05 17:07:32,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:07:32,872 INFO L435 NwaCegarLoop]: 4249 mSDtfsCounter, 4333 mSDsluCounter, 12733 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 16982 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:32,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 16982 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 17:07:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2025-02-05 17:07:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2570. [2025-02-05 17:07:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2507 states have (on average 1.8041483845233346) internal successors, (4523), 2511 states have internal predecessors, (4523), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-02-05 17:07:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 4609 transitions. [2025-02-05 17:07:32,957 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 4609 transitions. Word has length 79 [2025-02-05 17:07:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:32,957 INFO L471 AbstractCegarLoop]: Abstraction has 2570 states and 4609 transitions. [2025-02-05 17:07:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 4609 transitions. [2025-02-05 17:07:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:32,959 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:32,959 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:32,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 17:07:32,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:32,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:32,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2090908634, now seen corresponding path program 1 times [2025-02-05 17:07:32,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:32,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186377446] [2025-02-05 17:07:32,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:32,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:32,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:32,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:32,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:32,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:33,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:33,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186377446] [2025-02-05 17:07:33,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186377446] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:33,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:33,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:07:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393337285] [2025-02-05 17:07:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:33,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:07:33,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:33,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:07:33,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:33,071 INFO L87 Difference]: Start difference. First operand 2570 states and 4609 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:33,584 INFO L93 Difference]: Finished difference Result 3383 states and 5796 transitions. [2025-02-05 17:07:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:07:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:33,595 INFO L225 Difference]: With dead ends: 3383 [2025-02-05 17:07:33,596 INFO L226 Difference]: Without dead ends: 2945 [2025-02-05 17:07:33,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:07:33,598 INFO L435 NwaCegarLoop]: 4243 mSDtfsCounter, 4432 mSDsluCounter, 12710 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4447 SdHoareTripleChecker+Valid, 16953 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:33,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4447 Valid, 16953 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:07:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2025-02-05 17:07:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2851. [2025-02-05 17:07:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 2750 states have (on average 1.7723636363636364) internal successors, (4874), 2758 states have internal predecessors, (4874), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (79), 66 states have call predecessors, (79), 63 states have call successors, (79) [2025-02-05 17:07:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 5016 transitions. [2025-02-05 17:07:33,683 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 5016 transitions. Word has length 79 [2025-02-05 17:07:33,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:33,683 INFO L471 AbstractCegarLoop]: Abstraction has 2851 states and 5016 transitions. [2025-02-05 17:07:33,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 5016 transitions. [2025-02-05 17:07:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:33,685 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:33,685 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:33,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 17:07:33,685 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:33,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash 924212315, now seen corresponding path program 1 times [2025-02-05 17:07:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:33,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824722387] [2025-02-05 17:07:33,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:33,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:33,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:33,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:33,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:33,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824722387] [2025-02-05 17:07:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824722387] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:33,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:33,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:07:33,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596939116] [2025-02-05 17:07:33,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:33,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:07:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:33,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:07:33,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:07:33,766 INFO L87 Difference]: Start difference. First operand 2851 states and 5016 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:34,010 INFO L93 Difference]: Finished difference Result 3614 states and 6140 transitions. [2025-02-05 17:07:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:07:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:34,022 INFO L225 Difference]: With dead ends: 3614 [2025-02-05 17:07:34,023 INFO L226 Difference]: Without dead ends: 2895 [2025-02-05 17:07:34,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:34,027 INFO L435 NwaCegarLoop]: 4120 mSDtfsCounter, 4240 mSDsluCounter, 8174 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 12294 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:34,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 12294 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:07:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2025-02-05 17:07:34,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2851. [2025-02-05 17:07:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 2750 states have (on average 1.7705454545454546) internal successors, (4869), 2758 states have internal predecessors, (4869), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (79), 66 states have call predecessors, (79), 63 states have call successors, (79) [2025-02-05 17:07:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 5011 transitions. [2025-02-05 17:07:34,122 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 5011 transitions. Word has length 79 [2025-02-05 17:07:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:34,123 INFO L471 AbstractCegarLoop]: Abstraction has 2851 states and 5011 transitions. [2025-02-05 17:07:34,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 5011 transitions. [2025-02-05 17:07:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:34,125 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:34,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:34,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 17:07:34,125 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:34,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1025124282, now seen corresponding path program 1 times [2025-02-05 17:07:34,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:34,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042200214] [2025-02-05 17:07:34,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:34,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:34,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:34,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:34,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:34,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:34,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042200214] [2025-02-05 17:07:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042200214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:07:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551177458] [2025-02-05 17:07:34,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:34,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:07:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:34,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:07:34,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:34,255 INFO L87 Difference]: Start difference. First operand 2851 states and 5011 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:34,850 INFO L93 Difference]: Finished difference Result 4230 states and 7016 transitions. [2025-02-05 17:07:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:07:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:34,870 INFO L225 Difference]: With dead ends: 4230 [2025-02-05 17:07:34,870 INFO L226 Difference]: Without dead ends: 3511 [2025-02-05 17:07:34,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:07:34,876 INFO L435 NwaCegarLoop]: 4235 mSDtfsCounter, 4359 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 16922 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:34,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 16922 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 17:07:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2025-02-05 17:07:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3419. [2025-02-05 17:07:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3238 states have (on average 1.7192711550339717) internal successors, (5567), 3260 states have internal predecessors, (5567), 105 states have call successors, (105), 54 states have call predecessors, (105), 74 states have return successors, (169), 112 states have call predecessors, (169), 105 states have call successors, (169) [2025-02-05 17:07:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5841 transitions. [2025-02-05 17:07:35,042 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5841 transitions. Word has length 79 [2025-02-05 17:07:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:35,042 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5841 transitions. [2025-02-05 17:07:35,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5841 transitions. [2025-02-05 17:07:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:35,044 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:35,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:35,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 17:07:35,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:35,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1305474171, now seen corresponding path program 1 times [2025-02-05 17:07:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070016693] [2025-02-05 17:07:35,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:35,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:35,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:35,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:35,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:35,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:35,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070016693] [2025-02-05 17:07:35,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070016693] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:35,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:35,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:07:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476416955] [2025-02-05 17:07:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:35,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:07:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:35,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:07:35,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:07:35,145 INFO L87 Difference]: Start difference. First operand 3419 states and 5841 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:35,481 INFO L93 Difference]: Finished difference Result 4764 states and 7820 transitions. [2025-02-05 17:07:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:07:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:35,496 INFO L225 Difference]: With dead ends: 4764 [2025-02-05 17:07:35,496 INFO L226 Difference]: Without dead ends: 3477 [2025-02-05 17:07:35,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:35,501 INFO L435 NwaCegarLoop]: 4115 mSDtfsCounter, 4236 mSDsluCounter, 8165 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 12280 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:35,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 12280 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 17:07:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2025-02-05 17:07:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3419. [2025-02-05 17:07:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3238 states have (on average 1.7164916615194565) internal successors, (5558), 3260 states have internal predecessors, (5558), 105 states have call successors, (105), 54 states have call predecessors, (105), 74 states have return successors, (169), 112 states have call predecessors, (169), 105 states have call successors, (169) [2025-02-05 17:07:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5832 transitions. [2025-02-05 17:07:35,698 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5832 transitions. Word has length 79 [2025-02-05 17:07:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:35,699 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5832 transitions. [2025-02-05 17:07:35,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5832 transitions. [2025-02-05 17:07:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:07:35,701 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:35,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:07:35,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 17:07:35,701 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:35,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -625144934, now seen corresponding path program 1 times [2025-02-05 17:07:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568418906] [2025-02-05 17:07:35,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:35,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:07:35,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:07:35,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:35,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:07:35,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568418906] [2025-02-05 17:07:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568418906] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:35,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:07:35,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 17:07:35,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123725366] [2025-02-05 17:07:35,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:35,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 17:07:35,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:35,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 17:07:35,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:07:35,747 INFO L87 Difference]: Start difference. First operand 3419 states and 5832 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:35,969 INFO L93 Difference]: Finished difference Result 5943 states and 9555 transitions. [2025-02-05 17:07:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:07:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2025-02-05 17:07:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:35,988 INFO L225 Difference]: With dead ends: 5943 [2025-02-05 17:07:35,988 INFO L226 Difference]: Without dead ends: 4657 [2025-02-05 17:07:35,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:07:35,995 INFO L435 NwaCegarLoop]: 4380 mSDtfsCounter, 4347 mSDsluCounter, 4317 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 8697 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:35,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4347 Valid, 8697 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:07:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2025-02-05 17:07:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 4648. [2025-02-05 17:07:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4292 states have (on average 1.635135135135135) internal successors, (7018), 4343 states have internal predecessors, (7018), 206 states have call successors, (206), 108 states have call predecessors, (206), 148 states have return successors, (327), 204 states have call predecessors, (327), 206 states have call successors, (327) [2025-02-05 17:07:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7551 transitions. [2025-02-05 17:07:36,188 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7551 transitions. Word has length 79 [2025-02-05 17:07:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:36,189 INFO L471 AbstractCegarLoop]: Abstraction has 4648 states and 7551 transitions. [2025-02-05 17:07:36,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:07:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7551 transitions. [2025-02-05 17:07:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:07:36,194 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:36,194 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:36,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 17:07:36,195 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:36,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1353994054, now seen corresponding path program 1 times [2025-02-05 17:07:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:36,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215117447] [2025-02-05 17:07:36,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:36,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:36,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:36,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:36,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:07:36,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:36,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215117447] [2025-02-05 17:07:36,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215117447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:36,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989244303] [2025-02-05 17:07:36,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:36,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:36,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:36,271 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) [2025-02-05 17:07:36,274 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 [2025-02-05 17:07:36,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:36,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:36,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:36,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:36,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:36,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 17:07:36,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989244303] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:07:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929942798] [2025-02-05 17:07:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:36,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:36,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:36,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:36,447 INFO L87 Difference]: Start difference. First operand 4648 states and 7551 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:07:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:36,647 INFO L93 Difference]: Finished difference Result 9587 states and 14641 transitions. [2025-02-05 17:07:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:36,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2025-02-05 17:07:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:36,684 INFO L225 Difference]: With dead ends: 9587 [2025-02-05 17:07:36,684 INFO L226 Difference]: Without dead ends: 7072 [2025-02-05 17:07:36,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:36,694 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4140 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:36,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4140 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2025-02-05 17:07:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7016. [2025-02-05 17:07:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 6328 states have (on average 1.5619469026548674) internal successors, (9884), 6428 states have internal predecessors, (9884), 390 states have call successors, (390), 216 states have call predecessors, (390), 296 states have return successors, (625), 379 states have call predecessors, (625), 390 states have call successors, (625) [2025-02-05 17:07:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10899 transitions. [2025-02-05 17:07:36,956 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10899 transitions. Word has length 130 [2025-02-05 17:07:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:36,957 INFO L471 AbstractCegarLoop]: Abstraction has 7016 states and 10899 transitions. [2025-02-05 17:07:36,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:07:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10899 transitions. [2025-02-05 17:07:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:07:36,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:36,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:36,971 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 [2025-02-05 17:07:37,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:37,165 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:37,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash -928323724, now seen corresponding path program 1 times [2025-02-05 17:07:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690817522] [2025-02-05 17:07:37,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:37,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:37,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:37,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:37,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:07:37,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690817522] [2025-02-05 17:07:37,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690817522] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717161545] [2025-02-05 17:07:37,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:37,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:37,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:37,269 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) [2025-02-05 17:07:37,360 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 [2025-02-05 17:07:37,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:37,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:37,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:37,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:37,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:37,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 17:07:37,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:37,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717161545] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:37,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:37,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:07:37,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646037164] [2025-02-05 17:07:37,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:37,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:37,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:37,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:37,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:37,583 INFO L87 Difference]: Start difference. First operand 7016 states and 10899 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:07:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:37,846 INFO L93 Difference]: Finished difference Result 16649 states and 24697 transitions. [2025-02-05 17:07:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2025-02-05 17:07:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:37,883 INFO L225 Difference]: With dead ends: 16649 [2025-02-05 17:07:37,883 INFO L226 Difference]: Without dead ends: 11766 [2025-02-05 17:07:37,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:37,899 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4134 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:37,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4134 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11766 states. [2025-02-05 17:07:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11766 to 11656. [2025-02-05 17:07:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 10306 states have (on average 1.5008732777023093) internal successors, (15468), 10504 states have internal predecessors, (15468), 756 states have call successors, (756), 432 states have call predecessors, (756), 592 states have return successors, (1219), 727 states have call predecessors, (1219), 756 states have call successors, (1219) [2025-02-05 17:07:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 17443 transitions. [2025-02-05 17:07:38,284 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 17443 transitions. Word has length 130 [2025-02-05 17:07:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:38,284 INFO L471 AbstractCegarLoop]: Abstraction has 11656 states and 17443 transitions. [2025-02-05 17:07:38,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:07:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 17443 transitions. [2025-02-05 17:07:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:07:38,294 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:38,294 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:38,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 17:07:38,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:38,499 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:38,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1283469742, now seen corresponding path program 1 times [2025-02-05 17:07:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076350316] [2025-02-05 17:07:38,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:38,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:38,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:38,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:38,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:07:38,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:38,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076350316] [2025-02-05 17:07:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076350316] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:38,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157542995] [2025-02-05 17:07:38,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:38,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:38,574 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) [2025-02-05 17:07:38,576 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 [2025-02-05 17:07:38,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:38,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:38,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:38,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:38,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:38,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 17:07:38,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:38,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157542995] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:38,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:38,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:07:38,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838765959] [2025-02-05 17:07:38,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:38,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:38,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:38,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:38,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:38,795 INFO L87 Difference]: Start difference. First operand 11656 states and 17443 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:07:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:39,247 INFO L93 Difference]: Finished difference Result 30437 states and 44271 transitions. [2025-02-05 17:07:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2025-02-05 17:07:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:39,313 INFO L225 Difference]: With dead ends: 30437 [2025-02-05 17:07:39,313 INFO L226 Difference]: Without dead ends: 20914 [2025-02-05 17:07:39,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:39,349 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4146 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:39,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20914 states. [2025-02-05 17:07:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20914 to 20696. [2025-02-05 17:07:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20696 states, 18042 states have (on average 1.4581531980933378) internal successors, (26308), 18436 states have internal predecessors, (26308), 1468 states have call successors, (1468), 864 states have call predecessors, (1468), 1184 states have return successors, (2387), 1403 states have call predecessors, (2387), 1468 states have call successors, (2387) [2025-02-05 17:07:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20696 states to 20696 states and 30163 transitions. [2025-02-05 17:07:40,700 INFO L78 Accepts]: Start accepts. Automaton has 20696 states and 30163 transitions. Word has length 130 [2025-02-05 17:07:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:40,700 INFO L471 AbstractCegarLoop]: Abstraction has 20696 states and 30163 transitions. [2025-02-05 17:07:40,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:07:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 20696 states and 30163 transitions. [2025-02-05 17:07:40,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:07:40,714 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:40,714 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:40,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 17:07:40,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:40,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:40,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1570376472, now seen corresponding path program 1 times [2025-02-05 17:07:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:40,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136302290] [2025-02-05 17:07:40,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:40,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:40,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:40,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:40,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:07:40,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136302290] [2025-02-05 17:07:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136302290] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121091513] [2025-02-05 17:07:40,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:40,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:40,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:40,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:07:40,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 17:07:41,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:07:41,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:07:41,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:41,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:41,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:41,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:07:41,096 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:41,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121091513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:41,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:07:41,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31976798] [2025-02-05 17:07:41,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:41,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:41,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:41,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:41,098 INFO L87 Difference]: Start difference. First operand 20696 states and 30163 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 17:07:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:42,191 INFO L93 Difference]: Finished difference Result 56559 states and 81761 transitions. [2025-02-05 17:07:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2025-02-05 17:07:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:42,308 INFO L225 Difference]: With dead ends: 56559 [2025-02-05 17:07:42,308 INFO L226 Difference]: Without dead ends: 37997 [2025-02-05 17:07:42,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:42,342 INFO L435 NwaCegarLoop]: 4385 mSDtfsCounter, 197 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8567 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:42,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8567 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37997 states. [2025-02-05 17:07:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37997 to 37997. [2025-02-05 17:07:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 32912 states have (on average 1.4311193485658726) internal successors, (47101), 33627 states have internal predecessors, (47101), 2753 states have call successors, (2753), 1690 states have call predecessors, (2753), 2330 states have return successors, (5010), 2695 states have call predecessors, (5010), 2753 states have call successors, (5010) [2025-02-05 17:07:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 54864 transitions. [2025-02-05 17:07:44,217 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 54864 transitions. Word has length 130 [2025-02-05 17:07:44,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:44,218 INFO L471 AbstractCegarLoop]: Abstraction has 37997 states and 54864 transitions. [2025-02-05 17:07:44,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 17:07:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 54864 transitions. [2025-02-05 17:07:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-02-05 17:07:44,391 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:44,392 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:44,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 17:07:44,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 17:07:44,592 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:44,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -673862789, now seen corresponding path program 1 times [2025-02-05 17:07:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663042201] [2025-02-05 17:07:44,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:44,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:07:44,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:07:44,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:44,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:07:44,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:44,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663042201] [2025-02-05 17:07:44,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663042201] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:44,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927070099] [2025-02-05 17:07:44,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:44,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:44,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:07:44,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 17:07:44,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:07:44,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:07:44,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:44,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:44,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:44,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 17:07:44,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:44,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927070099] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:44,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:44,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:07:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724092725] [2025-02-05 17:07:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:44,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:44,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:44,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:44,859 INFO L87 Difference]: Start difference. First operand 37997 states and 54864 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:07:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:45,976 INFO L93 Difference]: Finished difference Result 62381 states and 89991 transitions. [2025-02-05 17:07:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 189 [2025-02-05 17:07:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:46,187 INFO L225 Difference]: With dead ends: 62381 [2025-02-05 17:07:46,187 INFO L226 Difference]: Without dead ends: 33881 [2025-02-05 17:07:46,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:46,266 INFO L435 NwaCegarLoop]: 4181 mSDtfsCounter, 4108 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:46,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4225 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33881 states. [2025-02-05 17:07:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33881 to 26045. [2025-02-05 17:07:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26045 states, 22856 states have (on average 1.4088641932096604) internal successors, (32201), 23095 states have internal predecessors, (32201), 1809 states have call successors, (1809), 1186 states have call predecessors, (1809), 1378 states have return successors, (2546), 1771 states have call predecessors, (2546), 1809 states have call successors, (2546) [2025-02-05 17:07:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26045 states to 26045 states and 36556 transitions. [2025-02-05 17:07:48,075 INFO L78 Accepts]: Start accepts. Automaton has 26045 states and 36556 transitions. Word has length 189 [2025-02-05 17:07:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:48,076 INFO L471 AbstractCegarLoop]: Abstraction has 26045 states and 36556 transitions. [2025-02-05 17:07:48,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:07:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 26045 states and 36556 transitions. [2025-02-05 17:07:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-02-05 17:07:48,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:48,108 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:48,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 17:07:48,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 17:07:48,312 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:48,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1462486276, now seen corresponding path program 1 times [2025-02-05 17:07:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:48,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553055864] [2025-02-05 17:07:48,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:48,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:07:48,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:07:48,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:48,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:07:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553055864] [2025-02-05 17:07:48,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553055864] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621668784] [2025-02-05 17:07:48,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:48,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:48,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:48,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:07:48,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 17:07:48,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:07:48,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:07:48,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:48,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:48,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:48,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 17:07:48,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621668784] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:48,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:07:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817308109] [2025-02-05 17:07:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:48,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:48,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:48,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:48,610 INFO L87 Difference]: Start difference. First operand 26045 states and 36556 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:07:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:49,716 INFO L93 Difference]: Finished difference Result 52627 states and 73537 transitions. [2025-02-05 17:07:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 189 [2025-02-05 17:07:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:49,804 INFO L225 Difference]: With dead ends: 52627 [2025-02-05 17:07:49,804 INFO L226 Difference]: Without dead ends: 28723 [2025-02-05 17:07:49,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:49,847 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4125 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4125 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:49,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4125 Valid, 4222 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28723 states. [2025-02-05 17:07:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28723 to 28723. [2025-02-05 17:07:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28723 states, 25330 states have (on average 1.3730359257797078) internal successors, (34779), 25569 states have internal predecessors, (34779), 1867 states have call successors, (1867), 1332 states have call predecessors, (1867), 1524 states have return successors, (2618), 1829 states have call predecessors, (2618), 1867 states have call successors, (2618) [2025-02-05 17:07:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 39264 transitions. [2025-02-05 17:07:51,156 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 39264 transitions. Word has length 189 [2025-02-05 17:07:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:51,157 INFO L471 AbstractCegarLoop]: Abstraction has 28723 states and 39264 transitions. [2025-02-05 17:07:51,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:07:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 39264 transitions. [2025-02-05 17:07:51,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-02-05 17:07:51,193 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:51,194 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:51,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 17:07:51,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-05 17:07:51,394 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:51,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1024898977, now seen corresponding path program 1 times [2025-02-05 17:07:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760359341] [2025-02-05 17:07:51,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:51,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:51,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:07:51,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:07:51,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:51,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:07:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760359341] [2025-02-05 17:07:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760359341] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889734542] [2025-02-05 17:07:51,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:51,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:51,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:51,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:07:51,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 17:07:51,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:07:51,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:07:51,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:51,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:51,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:07:51,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-05 17:07:51,636 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889734542] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:07:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120496230] [2025-02-05 17:07:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:51,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:51,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:51,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:51,638 INFO L87 Difference]: Start difference. First operand 28723 states and 39264 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:07:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:52,667 INFO L93 Difference]: Finished difference Result 51390 states and 69066 transitions. [2025-02-05 17:07:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 189 [2025-02-05 17:07:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:52,971 INFO L225 Difference]: With dead ends: 51390 [2025-02-05 17:07:52,972 INFO L226 Difference]: Without dead ends: 31167 [2025-02-05 17:07:53,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:53,027 INFO L435 NwaCegarLoop]: 4240 mSDtfsCounter, 4117 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4117 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:53,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4117 Valid, 4449 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31167 states. [2025-02-05 17:07:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31167 to 31003. [2025-02-05 17:07:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31003 states, 27466 states have (on average 1.3486856477098959) internal successors, (37043), 27705 states have internal predecessors, (37043), 1895 states have call successors, (1895), 1448 states have call predecessors, (1895), 1640 states have return successors, (2762), 1857 states have call predecessors, (2762), 1895 states have call successors, (2762) [2025-02-05 17:07:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31003 states to 31003 states and 41700 transitions. [2025-02-05 17:07:54,825 INFO L78 Accepts]: Start accepts. Automaton has 31003 states and 41700 transitions. Word has length 189 [2025-02-05 17:07:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:07:54,828 INFO L471 AbstractCegarLoop]: Abstraction has 31003 states and 41700 transitions. [2025-02-05 17:07:54,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:07:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 31003 states and 41700 transitions. [2025-02-05 17:07:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2025-02-05 17:07:54,874 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:07:54,874 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:07:54,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 17:07:55,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:55,075 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:07:55,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:07:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1565769217, now seen corresponding path program 1 times [2025-02-05 17:07:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:07:55,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525158242] [2025-02-05 17:07:55,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:07:55,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-02-05 17:07:55,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-02-05 17:07:55,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:55,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:07:55,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:07:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525158242] [2025-02-05 17:07:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525158242] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:07:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143034802] [2025-02-05 17:07:55,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:07:55,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:07:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:07:55,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:07:55,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 17:07:55,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-02-05 17:07:55,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-02-05 17:07:55,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:07:55,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:07:55,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:07:55,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:07:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:07:55,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:07:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143034802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:07:55,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:07:55,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:07:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582813590] [2025-02-05 17:07:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:07:55,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:07:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:07:55,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:07:55,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:55,357 INFO L87 Difference]: Start difference. First operand 31003 states and 41700 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:07:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:07:58,067 INFO L93 Difference]: Finished difference Result 85063 states and 113658 transitions. [2025-02-05 17:07:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:07:58,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 190 [2025-02-05 17:07:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:07:58,293 INFO L225 Difference]: With dead ends: 85063 [2025-02-05 17:07:58,293 INFO L226 Difference]: Without dead ends: 56201 [2025-02-05 17:07:58,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:07:58,357 INFO L435 NwaCegarLoop]: 4376 mSDtfsCounter, 179 mSDsluCounter, 4176 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 8552 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:07:58,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 8552 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:07:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56201 states. [2025-02-05 17:08:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56201 to 56199. [2025-02-05 17:08:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56199 states, 49448 states have (on average 1.3241587121824947) internal successors, (65477), 49925 states have internal predecessors, (65477), 3629 states have call successors, (3629), 2736 states have call predecessors, (3629), 3120 states have return successors, (6322), 3553 states have call predecessors, (6322), 3629 states have call successors, (6322) [2025-02-05 17:08:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56199 states to 56199 states and 75428 transitions. [2025-02-05 17:08:02,124 INFO L78 Accepts]: Start accepts. Automaton has 56199 states and 75428 transitions. Word has length 190 [2025-02-05 17:08:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:08:02,125 INFO L471 AbstractCegarLoop]: Abstraction has 56199 states and 75428 transitions. [2025-02-05 17:08:02,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:08:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 56199 states and 75428 transitions. [2025-02-05 17:08:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:08:02,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:08:02,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:08:02,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 17:08:02,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 17:08:02,393 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:08:02,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:08:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1460166588, now seen corresponding path program 1 times [2025-02-05 17:08:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:08:02,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802684596] [2025-02-05 17:08:02,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:08:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:08:02,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:08:02,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:08:02,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:08:02,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:08:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 17:08:02,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:08:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802684596] [2025-02-05 17:08:02,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802684596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:08:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427808490] [2025-02-05 17:08:02,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:08:02,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:08:02,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:08:02,490 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:08:02,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 17:08:02,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:08:02,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:08:02,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:08:02,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:08:02,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:08:02,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:08:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 17:08:02,684 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:08:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427808490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:08:02,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:08:02,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:08:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012509612] [2025-02-05 17:08:02,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:08:02,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:08:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:08:02,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:08:02,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:08:02,687 INFO L87 Difference]: Start difference. First operand 56199 states and 75428 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:08:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:08:04,615 INFO L93 Difference]: Finished difference Result 114137 states and 154137 transitions. [2025-02-05 17:08:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:08:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 191 [2025-02-05 17:08:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:08:04,876 INFO L225 Difference]: With dead ends: 114137 [2025-02-05 17:08:04,877 INFO L226 Difference]: Without dead ends: 60087 [2025-02-05 17:08:04,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:08:04,998 INFO L435 NwaCegarLoop]: 4187 mSDtfsCounter, 4138 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 4229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:08:04,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 4229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:08:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60087 states. [2025-02-05 17:08:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60087 to 56199. [2025-02-05 17:08:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56199 states, 49448 states have (on average 1.3044208056948714) internal successors, (64501), 49925 states have internal predecessors, (64501), 3629 states have call successors, (3629), 2736 states have call predecessors, (3629), 3120 states have return successors, (5974), 3553 states have call predecessors, (5974), 3629 states have call successors, (5974) [2025-02-05 17:08:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56199 states to 56199 states and 74104 transitions. [2025-02-05 17:08:08,015 INFO L78 Accepts]: Start accepts. Automaton has 56199 states and 74104 transitions. Word has length 191 [2025-02-05 17:08:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:08:08,016 INFO L471 AbstractCegarLoop]: Abstraction has 56199 states and 74104 transitions. [2025-02-05 17:08:08,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:08:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 56199 states and 74104 transitions. [2025-02-05 17:08:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:08:08,065 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:08:08,065 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:08:08,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 17:08:08,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:08:08,270 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:08:08,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:08:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -818246298, now seen corresponding path program 1 times [2025-02-05 17:08:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:08:08,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597179312] [2025-02-05 17:08:08,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:08:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:08:08,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:08:08,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:08:08,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:08:08,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:08:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-05 17:08:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:08:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597179312] [2025-02-05 17:08:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597179312] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:08:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649255455] [2025-02-05 17:08:08,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:08:08,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:08:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:08:08,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:08:08,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 17:08:08,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:08:08,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:08:08,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:08:08,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:08:08,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:08:08,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:08:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 17:08:08,441 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:08:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649255455] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:08:08,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:08:08,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:08:08,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008642734] [2025-02-05 17:08:08,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:08:08,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:08:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:08:08,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:08:08,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:08:08,442 INFO L87 Difference]: Start difference. First operand 56199 states and 74104 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:08:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:08:12,174 INFO L93 Difference]: Finished difference Result 161711 states and 213472 transitions. [2025-02-05 17:08:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:08:12,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 191 [2025-02-05 17:08:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:08:12,527 INFO L225 Difference]: With dead ends: 161711 [2025-02-05 17:08:12,527 INFO L226 Difference]: Without dead ends: 107661 [2025-02-05 17:08:12,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:08:12,636 INFO L435 NwaCegarLoop]: 4373 mSDtfsCounter, 189 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 8545 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:08:12,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 8545 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:08:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107661 states. [2025-02-05 17:08:16,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107661 to 107659. [2025-02-05 17:08:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107659 states, 94496 states have (on average 1.2842130883846936) internal successors, (121353), 95449 states have internal predecessors, (121353), 7033 states have call successors, (7033), 5360 states have call predecessors, (7033), 6128 states have return successors, (13948), 6881 states have call predecessors, (13948), 7033 states have call successors, (13948) [2025-02-05 17:08:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107659 states to 107659 states and 142334 transitions. [2025-02-05 17:08:17,630 INFO L78 Accepts]: Start accepts. Automaton has 107659 states and 142334 transitions. Word has length 191 [2025-02-05 17:08:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:08:17,631 INFO L471 AbstractCegarLoop]: Abstraction has 107659 states and 142334 transitions. [2025-02-05 17:08:17,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:08:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 107659 states and 142334 transitions. [2025-02-05 17:08:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:08:18,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:08:18,130 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-02-05 17:08:18,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 17:08:18,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 17:08:18,331 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:08:18,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:08:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash -222433373, now seen corresponding path program 1 times [2025-02-05 17:08:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:08:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325541094] [2025-02-05 17:08:18,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:08:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:08:18,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:08:18,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:08:18,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:08:18,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:08:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 17:08:18,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:08:18,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325541094] [2025-02-05 17:08:18,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325541094] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:08:18,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639716199] [2025-02-05 17:08:18,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:08:18,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:08:18,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:08:18,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:08:18,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 17:08:18,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:08:18,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:08:18,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:08:18,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:08:18,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:08:18,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:08:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 17:08:18,570 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:08:18,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639716199] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:08:18,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:08:18,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:08:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29341627] [2025-02-05 17:08:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:08:18,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:08:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:08:18,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:08:18,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:08:18,572 INFO L87 Difference]: Start difference. First operand 107659 states and 142334 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)