./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94e951826a6b890c42a47666caa0401c27bf1b0a09941efa99a0e4bb1e9e9065 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:44:11,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:44:11,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:44:11,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:44:11,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:44:11,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:44:11,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:44:11,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:44:11,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:44:11,844 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:44:11,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:44:11,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:44:11,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:44:11,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:44:11,844 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:44:11,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:44:11,845 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:44:11,846 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:44:11,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:44:11,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:44:11,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:44:11,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:44:11,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:44:11,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:44:11,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:44:11,847 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/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 -> 94e951826a6b890c42a47666caa0401c27bf1b0a09941efa99a0e4bb1e9e9065 [2025-03-03 15:44:12,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:44:12,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:44:12,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:44:12,078 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:44:12,079 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:44:12,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c [2025-03-03 15:44:13,303 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5538efcaf/4c23e7ad6bec40c2a4334c9796b99476/FLAG5cfd7c38e [2025-03-03 15:44:13,913 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:44:13,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c [2025-03-03 15:44:13,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5538efcaf/4c23e7ad6bec40c2a4334c9796b99476/FLAG5cfd7c38e [2025-03-03 15:44:13,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5538efcaf/4c23e7ad6bec40c2a4334c9796b99476 [2025-03-03 15:44:13,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:44:13,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:44:13,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:44:13,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:44:13,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:44:13,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:44:13" (1/1) ... [2025-03-03 15:44:13,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d1176b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:13, skipping insertion in model container [2025-03-03 15:44:13,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:44:13" (1/1) ... [2025-03-03 15:44:14,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:44:15,177 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[382357,382370] [2025-03-03 15:44:15,201 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[383339,383352] [2025-03-03 15:44:15,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:44:15,326 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:44:15,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[382357,382370] [2025-03-03 15:44:15,821 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[383339,383352] [2025-03-03 15:44:15,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:44:15,873 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:44:15,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15 WrapperNode [2025-03-03 15:44:15,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:44:15,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:44:15,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:44:15,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:44:15,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:15,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,183 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12621 [2025-03-03 15:44:16,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:44:16,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:44:16,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:44:16,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:44:16,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,362 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]. [2025-03-03 15:44:16,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,569 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:44:16,703 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:44:16,704 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:44:16,704 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:44:16,705 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (1/1) ... [2025-03-03 15:44:16,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:44:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:16,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 15:44:16,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 15:44:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:44:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-03 15:44:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-03 15:44:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-03 15:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:44:16,875 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:44:16,877 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:44:22,742 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-03 15:44:22,743 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-03 15:44:22,744 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-03 15:44:22,744 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-03 15:44:22,744 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-03 15:44:22,745 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-03 15:44:22,746 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-03 15:44:22,987 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2025-03-03 15:44:22,987 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:44:23,044 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:44:23,047 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:44:23,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:44:23 BoogieIcfgContainer [2025-03-03 15:44:23,048 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:44:23,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:44:23,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:44:23,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:44:23,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:44:13" (1/3) ... [2025-03-03 15:44:23,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42e078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:44:23, skipping insertion in model container [2025-03-03 15:44:23,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:44:15" (2/3) ... [2025-03-03 15:44:23,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e42e078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:44:23, skipping insertion in model container [2025-03-03 15:44:23,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:44:23" (3/3) ... [2025-03-03 15:44:23,055 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-2.c [2025-03-03 15:44:23,067 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:44:23,069 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+token_ring.02.cil-2.c that has 8 procedures, 2329 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-03-03 15:44:23,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:44:23,160 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;@6c985b3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:44:23,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-03 15:44:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 2329 states, 2301 states have (on average 1.8526727509778358) internal successors, (4263), 2306 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-03 15:44:23,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 15:44:23,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:23,181 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] [2025-03-03 15:44:23,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:23,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1010130643, now seen corresponding path program 1 times [2025-03-03 15:44:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266945404] [2025-03-03 15:44:23,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:23,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:23,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 15:44:23,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 15:44:23,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:23,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:44:23,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266945404] [2025-03-03 15:44:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266945404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:23,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:23,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:44:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308407383] [2025-03-03 15:44:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:23,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:44:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:23,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:44:23,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:44:23,623 INFO L87 Difference]: Start difference. First operand has 2329 states, 2301 states have (on average 1.8526727509778358) internal successors, (4263), 2306 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:23,973 INFO L93 Difference]: Finished difference Result 4651 states and 8593 transitions. [2025-03-03 15:44:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:44:23,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-03-03 15:44:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:24,004 INFO L225 Difference]: With dead ends: 4651 [2025-03-03 15:44:24,004 INFO L226 Difference]: Without dead ends: 2267 [2025-03-03 15:44:24,013 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 [2025-03-03 15:44:24,015 INFO L435 NwaCegarLoop]: 4173 mSDtfsCounter, 4267 mSDsluCounter, 8287 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4277 SdHoareTripleChecker+Valid, 12460 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:24,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4277 Valid, 12460 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 15:44:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2025-03-03 15:44:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2261. [2025-03-03 15:44:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2235 states have (on average 1.8460850111856824) internal successors, (4126), 2238 states have internal predecessors, (4126), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-03 15:44:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 4160 transitions. [2025-03-03 15:44:24,148 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 4160 transitions. Word has length 69 [2025-03-03 15:44:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:24,149 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 4160 transitions. [2025-03-03 15:44:24,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 4160 transitions. [2025-03-03 15:44:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 15:44:24,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:24,153 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] [2025-03-03 15:44:24,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 15:44:24,154 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:24,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash -316737938, now seen corresponding path program 1 times [2025-03-03 15:44:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254728326] [2025-03-03 15:44:24,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:24,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 15:44:24,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 15:44:24,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:24,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:44:24,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:24,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254728326] [2025-03-03 15:44:24,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254728326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:24,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:24,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:44:24,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874184151] [2025-03-03 15:44:24,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:24,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:44:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:24,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:44:24,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:24,315 INFO L87 Difference]: Start difference. First operand 2261 states and 4160 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:24,723 INFO L93 Difference]: Finished difference Result 2535 states and 4566 transitions. [2025-03-03 15:44:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:44:24,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-03-03 15:44:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:24,733 INFO L225 Difference]: With dead ends: 2535 [2025-03-03 15:44:24,733 INFO L226 Difference]: Without dead ends: 2405 [2025-03-03 15:44:24,735 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 [2025-03-03 15:44:24,735 INFO L435 NwaCegarLoop]: 4218 mSDtfsCounter, 4260 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 16868 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:24,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4270 Valid, 16868 Invalid, 480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:44:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2025-03-03 15:44:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2391. [2025-03-03 15:44:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 2344 states have (on average 1.828924914675768) internal successors, (4287), 2349 states have internal predecessors, (4287), 31 states have call successors, (31), 13 states have call predecessors, (31), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2025-03-03 15:44:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 4354 transitions. [2025-03-03 15:44:24,851 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 4354 transitions. Word has length 69 [2025-03-03 15:44:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:24,851 INFO L471 AbstractCegarLoop]: Abstraction has 2391 states and 4354 transitions. [2025-03-03 15:44:24,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 4354 transitions. [2025-03-03 15:44:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 15:44:24,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:24,853 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] [2025-03-03 15:44:24,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 15:44:24,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:24,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash 121271565, now seen corresponding path program 1 times [2025-03-03 15:44:24,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005348715] [2025-03-03 15:44:24,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:24,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:24,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 15:44:24,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 15:44:24,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:24,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:44:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005348715] [2025-03-03 15:44:25,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005348715] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:25,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:25,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:44:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66549598] [2025-03-03 15:44:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:25,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:44:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:25,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:44:25,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:25,023 INFO L87 Difference]: Start difference. First operand 2391 states and 4354 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:25,451 INFO L93 Difference]: Finished difference Result 2949 states and 5178 transitions. [2025-03-03 15:44:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:44:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-03-03 15:44:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:25,463 INFO L225 Difference]: With dead ends: 2949 [2025-03-03 15:44:25,464 INFO L226 Difference]: Without dead ends: 2691 [2025-03-03 15:44:25,466 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 [2025-03-03 15:44:25,466 INFO L435 NwaCegarLoop]: 4191 mSDtfsCounter, 4331 mSDsluCounter, 12580 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 16771 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:25,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 16771 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:44:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2025-03-03 15:44:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2631. [2025-03-03 15:44:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2548 states have (on average 1.7998430141287285) internal successors, (4586), 2557 states have internal predecessors, (4586), 51 states have call successors, (51), 25 states have call predecessors, (51), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-03-03 15:44:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4709 transitions. [2025-03-03 15:44:25,556 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4709 transitions. Word has length 69 [2025-03-03 15:44:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:25,557 INFO L471 AbstractCegarLoop]: Abstraction has 2631 states and 4709 transitions. [2025-03-03 15:44:25,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4709 transitions. [2025-03-03 15:44:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 15:44:25,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:25,559 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] [2025-03-03 15:44:25,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 15:44:25,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:25,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1804261746, now seen corresponding path program 1 times [2025-03-03 15:44:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482051796] [2025-03-03 15:44:25,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:25,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 15:44:25,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 15:44:25,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:25,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:44:25,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482051796] [2025-03-03 15:44:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482051796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:25,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:25,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 15:44:25,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190254346] [2025-03-03 15:44:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:25,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 15:44:25,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:25,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 15:44:25,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 15:44:25,669 INFO L87 Difference]: Start difference. First operand 2631 states and 4709 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:25,892 INFO L93 Difference]: Finished difference Result 3158 states and 5505 transitions. [2025-03-03 15:44:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:44:25,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-03-03 15:44:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:25,904 INFO L225 Difference]: With dead ends: 3158 [2025-03-03 15:44:25,904 INFO L226 Difference]: Without dead ends: 2658 [2025-03-03 15:44:25,907 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 [2025-03-03 15:44:25,908 INFO L435 NwaCegarLoop]: 4099 mSDtfsCounter, 4193 mSDsluCounter, 8138 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 12237 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:25,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4203 Valid, 12237 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:44:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2025-03-03 15:44:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2631. [2025-03-03 15:44:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2548 states have (on average 1.7978806907378335) internal successors, (4581), 2557 states have internal predecessors, (4581), 51 states have call successors, (51), 25 states have call predecessors, (51), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-03-03 15:44:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4704 transitions. [2025-03-03 15:44:25,992 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4704 transitions. Word has length 69 [2025-03-03 15:44:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:25,992 INFO L471 AbstractCegarLoop]: Abstraction has 2631 states and 4704 transitions. [2025-03-03 15:44:25,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4704 transitions. [2025-03-03 15:44:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 15:44:25,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:25,994 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] [2025-03-03 15:44:25,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 15:44:25,994 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:25,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1035091731, now seen corresponding path program 1 times [2025-03-03 15:44:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:25,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968066449] [2025-03-03 15:44:25,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:26,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 15:44:26,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 15:44:26,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:26,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:44:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968066449] [2025-03-03 15:44:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968066449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:26,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 15:44:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324520261] [2025-03-03 15:44:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:26,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 15:44:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:26,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 15:44:26,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:26,104 INFO L87 Difference]: Start difference. First operand 2631 states and 4704 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:26,513 INFO L93 Difference]: Finished difference Result 3655 states and 6215 transitions. [2025-03-03 15:44:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 15:44:26,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-03-03 15:44:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:26,528 INFO L225 Difference]: With dead ends: 3655 [2025-03-03 15:44:26,528 INFO L226 Difference]: Without dead ends: 3157 [2025-03-03 15:44:26,531 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 [2025-03-03 15:44:26,532 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4258 mSDsluCounter, 12549 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4271 SdHoareTripleChecker+Valid, 16733 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:26,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4271 Valid, 16733 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 15:44:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2025-03-03 15:44:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3111. [2025-03-03 15:44:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2952 states have (on average 1.7489837398373984) internal successors, (5163), 2975 states have internal predecessors, (5163), 89 states have call successors, (89), 49 states have call predecessors, (89), 68 states have return successors, (166), 94 states have call predecessors, (166), 87 states have call successors, (166) [2025-03-03 15:44:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 5418 transitions. [2025-03-03 15:44:26,647 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 5418 transitions. Word has length 69 [2025-03-03 15:44:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:26,648 INFO L471 AbstractCegarLoop]: Abstraction has 3111 states and 5418 transitions. [2025-03-03 15:44:26,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 5418 transitions. [2025-03-03 15:44:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 15:44:26,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:26,650 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] [2025-03-03 15:44:26,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 15:44:26,650 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:26,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 98098862, now seen corresponding path program 1 times [2025-03-03 15:44:26,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:26,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257431583] [2025-03-03 15:44:26,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:26,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 15:44:26,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 15:44:26,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:26,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 15:44:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:26,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257431583] [2025-03-03 15:44:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257431583] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 15:44:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565008886] [2025-03-03 15:44:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:26,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 15:44:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:26,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 15:44:26,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 15:44:26,704 INFO L87 Difference]: Start difference. First operand 3111 states and 5418 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:26,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:26,866 INFO L93 Difference]: Finished difference Result 4981 states and 8201 transitions. [2025-03-03 15:44:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 15:44:26,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-03-03 15:44:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:26,880 INFO L225 Difference]: With dead ends: 4981 [2025-03-03 15:44:26,881 INFO L226 Difference]: Without dead ends: 4003 [2025-03-03 15:44:26,886 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 [2025-03-03 15:44:26,886 INFO L435 NwaCegarLoop]: 4310 mSDtfsCounter, 4284 mSDsluCounter, 4249 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 8559 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:26,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 8559 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 15:44:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2025-03-03 15:44:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3995. [2025-03-03 15:44:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3687 states have (on average 1.6718199077841063) internal successors, (6164), 3738 states have internal predecessors, (6164), 170 states have call successors, (170), 97 states have call predecessors, (170), 136 states have return successors, (311), 167 states have call predecessors, (311), 168 states have call successors, (311) [2025-03-03 15:44:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 6645 transitions. [2025-03-03 15:44:27,065 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 6645 transitions. Word has length 69 [2025-03-03 15:44:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:27,065 INFO L471 AbstractCegarLoop]: Abstraction has 3995 states and 6645 transitions. [2025-03-03 15:44:27,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 15:44:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 6645 transitions. [2025-03-03 15:44:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 15:44:27,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:27,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:44:27,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 15:44:27,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:27,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 181071161, now seen corresponding path program 1 times [2025-03-03 15:44:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122200545] [2025-03-03 15:44:27,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:27,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 15:44:27,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 15:44:27,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:27,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:44:27,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:27,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122200545] [2025-03-03 15:44:27,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122200545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:27,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284901405] [2025-03-03 15:44:27,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:27,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:27,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:27,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 15:44:27,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 15:44:27,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 15:44:27,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:27,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:27,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:27,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 15:44:27,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:27,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284901405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:27,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:44:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046376293] [2025-03-03 15:44:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:27,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:27,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:27,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:27,317 INFO L87 Difference]: Start difference. First operand 3995 states and 6645 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:44:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:27,453 INFO L93 Difference]: Finished difference Result 7661 states and 11941 transitions. [2025-03-03 15:44:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:27,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2025-03-03 15:44:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:27,478 INFO L225 Difference]: With dead ends: 7661 [2025-03-03 15:44:27,478 INFO L226 Difference]: Without dead ends: 5799 [2025-03-03 15:44:27,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:27,487 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4113 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4113 SdHoareTripleChecker+Valid, 4328 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 [2025-03-03 15:44:27,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4113 Valid, 4328 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2025-03-03 15:44:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5747. [2025-03-03 15:44:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5149 states have (on average 1.5952612157700525) internal successors, (8214), 5248 states have internal predecessors, (8214), 324 states have call successors, (324), 193 states have call predecessors, (324), 272 states have return successors, (593), 313 states have call predecessors, (593), 322 states have call successors, (593) [2025-03-03 15:44:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 9131 transitions. [2025-03-03 15:44:27,666 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 9131 transitions. Word has length 113 [2025-03-03 15:44:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:27,666 INFO L471 AbstractCegarLoop]: Abstraction has 5747 states and 9131 transitions. [2025-03-03 15:44:27,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:44:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 9131 transitions. [2025-03-03 15:44:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 15:44:27,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:27,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:44:27,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 15:44:27,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:27,878 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:27,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash -801364877, now seen corresponding path program 1 times [2025-03-03 15:44:27,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:27,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033254230] [2025-03-03 15:44:27,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:27,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:27,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 15:44:27,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 15:44:27,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:27,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:44:27,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033254230] [2025-03-03 15:44:27,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033254230] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599424243] [2025-03-03 15:44:27,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:27,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:27,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:27,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 15:44:27,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 15:44:28,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 15:44:28,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:28,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:28,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:28,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 15:44:28,074 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599424243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:28,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-03 15:44:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855486171] [2025-03-03 15:44:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:28,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:28,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:28,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:28,075 INFO L87 Difference]: Start difference. First operand 5747 states and 9131 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:44:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:28,371 INFO L93 Difference]: Finished difference Result 12861 states and 19369 transitions. [2025-03-03 15:44:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2025-03-03 15:44:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:28,418 INFO L225 Difference]: With dead ends: 12861 [2025-03-03 15:44:28,419 INFO L226 Difference]: Without dead ends: 9247 [2025-03-03 15:44:28,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:28,433 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4119 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4119 SdHoareTripleChecker+Valid, 4328 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 [2025-03-03 15:44:28,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4119 Valid, 4328 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9247 states. [2025-03-03 15:44:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9247 to 9147. [2025-03-03 15:44:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9147 states, 7977 states have (on average 1.5256362040867495) internal successors, (12170), 8172 states have internal predecessors, (12170), 624 states have call successors, (624), 385 states have call predecessors, (624), 544 states have return successors, (1149), 597 states have call predecessors, (1149), 622 states have call successors, (1149) [2025-03-03 15:44:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 13943 transitions. [2025-03-03 15:44:28,773 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 13943 transitions. Word has length 113 [2025-03-03 15:44:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:28,774 INFO L471 AbstractCegarLoop]: Abstraction has 9147 states and 13943 transitions. [2025-03-03 15:44:28,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 15:44:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 13943 transitions. [2025-03-03 15:44:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 15:44:28,781 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:28,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:44:28,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 15:44:28,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-03 15:44:28,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:28,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1876002861, now seen corresponding path program 1 times [2025-03-03 15:44:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:28,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330381983] [2025-03-03 15:44:28,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:28,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 15:44:28,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 15:44:28,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:28,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 15:44:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330381983] [2025-03-03 15:44:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330381983] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174420776] [2025-03-03 15:44:29,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:29,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:29,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:29,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:29,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 15:44:29,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 15:44:29,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 15:44:29,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:29,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:29,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:29,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-03 15:44:29,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174420776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:29,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968169650] [2025-03-03 15:44:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:29,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:29,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:29,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:29,198 INFO L87 Difference]: Start difference. First operand 9147 states and 13943 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 15:44:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:29,563 INFO L93 Difference]: Finished difference Result 22395 states and 33090 transitions. [2025-03-03 15:44:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2025-03-03 15:44:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:29,625 INFO L225 Difference]: With dead ends: 22395 [2025-03-03 15:44:29,625 INFO L226 Difference]: Without dead ends: 15383 [2025-03-03 15:44:29,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:29,651 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 156 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8466 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 [2025-03-03 15:44:29,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8466 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15383 states. [2025-03-03 15:44:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15383 to 15383. [2025-03-03 15:44:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15383 states, 13184 states have (on average 1.4674605582524272) internal successors, (19347), 13540 states have internal predecessors, (19347), 1145 states have call successors, (1145), 733 states have call predecessors, (1145), 1052 states have return successors, (2331), 1125 states have call predecessors, (2331), 1143 states have call successors, (2331) [2025-03-03 15:44:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15383 states to 15383 states and 22823 transitions. [2025-03-03 15:44:30,443 INFO L78 Accepts]: Start accepts. Automaton has 15383 states and 22823 transitions. Word has length 113 [2025-03-03 15:44:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:30,444 INFO L471 AbstractCegarLoop]: Abstraction has 15383 states and 22823 transitions. [2025-03-03 15:44:30,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 15:44:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15383 states and 22823 transitions. [2025-03-03 15:44:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-03 15:44:30,477 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:30,477 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, 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] [2025-03-03 15:44:30,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 15:44:30,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:30,681 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:30,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 218358296, now seen corresponding path program 1 times [2025-03-03 15:44:30,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:30,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344053444] [2025-03-03 15:44:30,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:30,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:30,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 15:44:30,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 15:44:30,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:30,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-03 15:44:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344053444] [2025-03-03 15:44:30,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344053444] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716808717] [2025-03-03 15:44:30,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:30,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:30,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:30,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:30,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 15:44:30,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 15:44:30,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 15:44:30,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:30,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:30,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:30,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-03 15:44:30,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:30,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716808717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:30,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:30,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507680190] [2025-03-03 15:44:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:30,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:30,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:30,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:30,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:30,943 INFO L87 Difference]: Start difference. First operand 15383 states and 22823 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2025-03-03 15:44:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:31,298 INFO L93 Difference]: Finished difference Result 23771 states and 35164 transitions. [2025-03-03 15:44:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 165 [2025-03-03 15:44:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:31,343 INFO L225 Difference]: With dead ends: 23771 [2025-03-03 15:44:31,343 INFO L226 Difference]: Without dead ends: 13507 [2025-03-03 15:44:31,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:31,370 INFO L435 NwaCegarLoop]: 4151 mSDtfsCounter, 4086 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4185 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 [2025-03-03 15:44:31,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4185 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13507 states. [2025-03-03 15:44:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13507 to 13435. [2025-03-03 15:44:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13435 states, 11664 states have (on average 1.4436728395061729) internal successors, (16839), 11846 states have internal predecessors, (16839), 967 states have call successors, (967), 651 states have call predecessors, (967), 802 states have return successors, (1595), 947 states have call predecessors, (1595), 965 states have call successors, (1595) [2025-03-03 15:44:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 19401 transitions. [2025-03-03 15:44:31,835 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 19401 transitions. Word has length 165 [2025-03-03 15:44:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:31,836 INFO L471 AbstractCegarLoop]: Abstraction has 13435 states and 19401 transitions. [2025-03-03 15:44:31,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2025-03-03 15:44:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 19401 transitions. [2025-03-03 15:44:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-03 15:44:31,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:31,857 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, 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] [2025-03-03 15:44:31,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 15:44:32,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:32,061 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:32,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash 820284657, now seen corresponding path program 1 times [2025-03-03 15:44:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:32,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128876059] [2025-03-03 15:44:32,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:32,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 15:44:32,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 15:44:32,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:32,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-03 15:44:32,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128876059] [2025-03-03 15:44:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128876059] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445843275] [2025-03-03 15:44:32,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:32,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:32,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:32,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:32,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 15:44:32,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 15:44:32,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 15:44:32,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:32,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:32,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:32,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 15:44:32,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:32,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445843275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:32,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:32,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:32,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137094845] [2025-03-03 15:44:32,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:32,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:32,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:32,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:32,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:32,276 INFO L87 Difference]: Start difference. First operand 13435 states and 19401 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 15:44:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:32,544 INFO L93 Difference]: Finished difference Result 21870 states and 31350 transitions. [2025-03-03 15:44:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 165 [2025-03-03 15:44:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:32,583 INFO L225 Difference]: With dead ends: 21870 [2025-03-03 15:44:32,583 INFO L226 Difference]: Without dead ends: 12026 [2025-03-03 15:44:32,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:32,606 INFO L435 NwaCegarLoop]: 4150 mSDtfsCounter, 4101 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4183 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 [2025-03-03 15:44:32,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4183 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12026 states. [2025-03-03 15:44:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12026 to 12006. [2025-03-03 15:44:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12006 states, 10549 states have (on average 1.4259171485448858) internal successors, (15042), 10642 states have internal predecessors, (15042), 813 states have call successors, (813), 575 states have call predecessors, (813), 642 states have return successors, (1167), 794 states have call predecessors, (1167), 811 states have call successors, (1167) [2025-03-03 15:44:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12006 states to 12006 states and 17022 transitions. [2025-03-03 15:44:33,027 INFO L78 Accepts]: Start accepts. Automaton has 12006 states and 17022 transitions. Word has length 165 [2025-03-03 15:44:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:33,028 INFO L471 AbstractCegarLoop]: Abstraction has 12006 states and 17022 transitions. [2025-03-03 15:44:33,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 15:44:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 12006 states and 17022 transitions. [2025-03-03 15:44:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-03 15:44:33,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:33,046 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, 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] [2025-03-03 15:44:33,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 15:44:33,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 15:44:33,247 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:33,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash -156090862, now seen corresponding path program 1 times [2025-03-03 15:44:33,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:33,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329171951] [2025-03-03 15:44:33,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:33,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 15:44:33,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 15:44:33,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:33,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-03 15:44:33,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:33,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329171951] [2025-03-03 15:44:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329171951] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063804702] [2025-03-03 15:44:33,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:33,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:33,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:33,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:33,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 15:44:33,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 15:44:33,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 15:44:33,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:33,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:33,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 15:44:33,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-03 15:44:33,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:33,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063804702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:33,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:33,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933397566] [2025-03-03 15:44:33,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:33,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:33,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:33,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:33,446 INFO L87 Difference]: Start difference. First operand 12006 states and 17022 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 15:44:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:33,824 INFO L93 Difference]: Finished difference Result 20508 states and 28185 transitions. [2025-03-03 15:44:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:33,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2025-03-03 15:44:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:33,869 INFO L225 Difference]: With dead ends: 20508 [2025-03-03 15:44:33,870 INFO L226 Difference]: Without dead ends: 12940 [2025-03-03 15:44:33,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:33,885 INFO L435 NwaCegarLoop]: 4197 mSDtfsCounter, 4084 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 4375 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:33,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 4375 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2025-03-03 15:44:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 12835. [2025-03-03 15:44:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 11336 states have (on average 1.3995236414961185) internal successors, (15865), 11429 states have internal predecessors, (15865), 813 states have call successors, (813), 617 states have call predecessors, (813), 684 states have return successors, (1209), 794 states have call predecessors, (1209), 811 states have call successors, (1209) [2025-03-03 15:44:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 17887 transitions. [2025-03-03 15:44:34,491 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 17887 transitions. Word has length 165 [2025-03-03 15:44:34,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:34,492 INFO L471 AbstractCegarLoop]: Abstraction has 12835 states and 17887 transitions. [2025-03-03 15:44:34,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 15:44:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 17887 transitions. [2025-03-03 15:44:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-03 15:44:34,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:34,509 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, 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] [2025-03-03 15:44:34,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 15:44:34,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:34,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash -924627161, now seen corresponding path program 1 times [2025-03-03 15:44:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711030061] [2025-03-03 15:44:34,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:34,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 15:44:34,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 15:44:34,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:34,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-03 15:44:34,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711030061] [2025-03-03 15:44:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711030061] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293770216] [2025-03-03 15:44:34,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:34,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:34,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:34,797 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:34,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 15:44:34,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 15:44:34,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 15:44:34,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:34,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:34,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:34,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-03 15:44:34,922 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293770216] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:34,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246104310] [2025-03-03 15:44:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:34,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:34,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:34,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:34,923 INFO L87 Difference]: Start difference. First operand 12835 states and 17887 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 15:44:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:35,713 INFO L93 Difference]: Finished difference Result 32953 states and 44489 transitions. [2025-03-03 15:44:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:35,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 166 [2025-03-03 15:44:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:35,788 INFO L225 Difference]: With dead ends: 32953 [2025-03-03 15:44:35,788 INFO L226 Difference]: Without dead ends: 22261 [2025-03-03 15:44:35,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:35,814 INFO L435 NwaCegarLoop]: 4317 mSDtfsCounter, 151 mSDsluCounter, 4146 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8463 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 [2025-03-03 15:44:35,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8463 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22261 states. [2025-03-03 15:44:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22261 to 22257. [2025-03-03 15:44:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22257 states, 19376 states have (on average 1.3463563170933113) internal successors, (26087), 19560 states have internal predecessors, (26087), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1312 states have return successors, (2699), 1531 states have call predecessors, (2699), 1565 states have call successors, (2699) [2025-03-03 15:44:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 30353 transitions. [2025-03-03 15:44:36,534 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 30353 transitions. Word has length 166 [2025-03-03 15:44:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:36,535 INFO L471 AbstractCegarLoop]: Abstraction has 22257 states and 30353 transitions. [2025-03-03 15:44:36,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 15:44:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 30353 transitions. [2025-03-03 15:44:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 15:44:36,553 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:36,553 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, 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] [2025-03-03 15:44:36,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 15:44:36,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:36,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:36,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash 663194010, now seen corresponding path program 1 times [2025-03-03 15:44:36,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:36,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011531040] [2025-03-03 15:44:36,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:36,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:36,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:36,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:36,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:36,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-03 15:44:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011531040] [2025-03-03 15:44:36,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011531040] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622590838] [2025-03-03 15:44:36,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:36,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:36,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 15:44:36,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:36,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:36,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:36,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:36,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:36,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 15:44:36,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622590838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:36,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016539345] [2025-03-03 15:44:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:36,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:36,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:36,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:36,954 INFO L87 Difference]: Start difference. First operand 22257 states and 30353 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 15:44:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:37,568 INFO L93 Difference]: Finished difference Result 43639 states and 59252 transitions. [2025-03-03 15:44:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 167 [2025-03-03 15:44:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:37,632 INFO L225 Difference]: With dead ends: 43639 [2025-03-03 15:44:37,633 INFO L226 Difference]: Without dead ends: 23537 [2025-03-03 15:44:37,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:37,670 INFO L435 NwaCegarLoop]: 4153 mSDtfsCounter, 4108 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4185 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 [2025-03-03 15:44:37,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23537 states. [2025-03-03 15:44:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23537 to 22257. [2025-03-03 15:44:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22257 states, 19376 states have (on average 1.3215834021469859) internal successors, (25607), 19560 states have internal predecessors, (25607), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1312 states have return successors, (2573), 1531 states have call predecessors, (2573), 1565 states have call successors, (2573) [2025-03-03 15:44:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 29747 transitions. [2025-03-03 15:44:38,331 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 29747 transitions. Word has length 167 [2025-03-03 15:44:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:38,331 INFO L471 AbstractCegarLoop]: Abstraction has 22257 states and 29747 transitions. [2025-03-03 15:44:38,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 15:44:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 29747 transitions. [2025-03-03 15:44:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 15:44:38,348 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:38,348 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, 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] [2025-03-03 15:44:38,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 15:44:38,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-03 15:44:38,549 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:38,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1306474692, now seen corresponding path program 1 times [2025-03-03 15:44:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049149584] [2025-03-03 15:44:38,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:38,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:38,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:38,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:38,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:38,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-03 15:44:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049149584] [2025-03-03 15:44:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049149584] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196098194] [2025-03-03 15:44:38,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:38,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:38,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:38,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:38,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 15:44:38,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:38,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:38,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:38,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:38,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 15:44:38,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 15:44:38,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:38,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196098194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:38,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:38,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208957718] [2025-03-03 15:44:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:38,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:38,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:38,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:38,704 INFO L87 Difference]: Start difference. First operand 22257 states and 29747 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 15:44:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:39,822 INFO L93 Difference]: Finished difference Result 59931 states and 78859 transitions. [2025-03-03 15:44:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 167 [2025-03-03 15:44:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:40,001 INFO L225 Difference]: With dead ends: 59931 [2025-03-03 15:44:40,001 INFO L226 Difference]: Without dead ends: 39829 [2025-03-03 15:44:40,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:40,047 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 158 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 8457 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 [2025-03-03 15:44:40,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 8457 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39829 states. [2025-03-03 15:44:41,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39829 to 39825. [2025-03-03 15:44:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39825 states, 34292 states have (on average 1.2811442902134609) internal successors, (43933), 34658 states have internal predecessors, (43933), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-03-03 15:44:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39825 states to 39825 states and 52649 transitions. [2025-03-03 15:44:41,881 INFO L78 Accepts]: Start accepts. Automaton has 39825 states and 52649 transitions. Word has length 167 [2025-03-03 15:44:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:41,882 INFO L471 AbstractCegarLoop]: Abstraction has 39825 states and 52649 transitions. [2025-03-03 15:44:41,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 15:44:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 39825 states and 52649 transitions. [2025-03-03 15:44:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 15:44:41,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:41,909 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, 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] [2025-03-03 15:44:41,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 15:44:42,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 15:44:42,113 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:42,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1498376465, now seen corresponding path program 1 times [2025-03-03 15:44:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:42,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304080390] [2025-03-03 15:44:42,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:42,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:42,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:42,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:42,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-03 15:44:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304080390] [2025-03-03 15:44:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304080390] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250995049] [2025-03-03 15:44:42,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:42,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:42,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:42,171 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:42,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 15:44:42,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:42,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:42,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:42,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:42,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 15:44:42,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 15:44:42,402 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250995049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:42,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:42,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959844688] [2025-03-03 15:44:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:42,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:42,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:42,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:42,405 INFO L87 Difference]: Start difference. First operand 39825 states and 52649 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 15:44:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:43,370 INFO L93 Difference]: Finished difference Result 71459 states and 93655 transitions. [2025-03-03 15:44:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 167 [2025-03-03 15:44:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:43,504 INFO L225 Difference]: With dead ends: 71459 [2025-03-03 15:44:43,504 INFO L226 Difference]: Without dead ends: 40505 [2025-03-03 15:44:43,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:43,571 INFO L435 NwaCegarLoop]: 4175 mSDtfsCounter, 4103 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:43,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4103 Valid, 4349 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40505 states. [2025-03-03 15:44:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40505 to 39741. [2025-03-03 15:44:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39741 states, 34208 states have (on average 1.2732401777362021) internal successors, (43555), 34574 states have internal predecessors, (43555), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-03-03 15:44:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39741 states to 39741 states and 52271 transitions. [2025-03-03 15:44:45,173 INFO L78 Accepts]: Start accepts. Automaton has 39741 states and 52271 transitions. Word has length 167 [2025-03-03 15:44:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:45,173 INFO L471 AbstractCegarLoop]: Abstraction has 39741 states and 52271 transitions. [2025-03-03 15:44:45,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 15:44:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 39741 states and 52271 transitions. [2025-03-03 15:44:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 15:44:45,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:45,204 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, 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] [2025-03-03 15:44:45,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-03 15:44:45,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 15:44:45,405 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:45,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash 896435536, now seen corresponding path program 1 times [2025-03-03 15:44:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:45,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12721510] [2025-03-03 15:44:45,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:45,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 15:44:45,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 15:44:45,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:45,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-03 15:44:45,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12721510] [2025-03-03 15:44:45,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12721510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:45,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:44:45,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987265326] [2025-03-03 15:44:45,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:45,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:45,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:45,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:44:45,439 INFO L87 Difference]: Start difference. First operand 39741 states and 52271 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 15:44:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:46,964 INFO L93 Difference]: Finished difference Result 70619 states and 91778 transitions. [2025-03-03 15:44:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:46,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 167 [2025-03-03 15:44:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:47,079 INFO L225 Difference]: With dead ends: 70619 [2025-03-03 15:44:47,079 INFO L226 Difference]: Without dead ends: 33025 [2025-03-03 15:44:47,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:44:47,154 INFO L435 NwaCegarLoop]: 4148 mSDtfsCounter, 185 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 8106 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:47,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 8106 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33025 states. [2025-03-03 15:44:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33025 to 33025. [2025-03-03 15:44:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33025 states, 28528 states have (on average 1.2838264161525519) internal successors, (36625), 28818 states have internal predecessors, (36625), 2447 states have call successors, (2447), 1833 states have call predecessors, (2447), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-03-03 15:44:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33025 states to 33025 states and 43521 transitions. [2025-03-03 15:44:48,961 INFO L78 Accepts]: Start accepts. Automaton has 33025 states and 43521 transitions. Word has length 167 [2025-03-03 15:44:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:48,962 INFO L471 AbstractCegarLoop]: Abstraction has 33025 states and 43521 transitions. [2025-03-03 15:44:48,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 15:44:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33025 states and 43521 transitions. [2025-03-03 15:44:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-03 15:44:48,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:48,982 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, 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] [2025-03-03 15:44:48,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 15:44:48,982 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:48,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash -229199568, now seen corresponding path program 1 times [2025-03-03 15:44:48,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:48,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715786791] [2025-03-03 15:44:48,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:48,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 15:44:48,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 15:44:48,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:48,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-03 15:44:49,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715786791] [2025-03-03 15:44:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715786791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 15:44:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939924437] [2025-03-03 15:44:49,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:49,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 15:44:49,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:44:49,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 15:44:49,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 15:44:49,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 15:44:49,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 15:44:49,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:49,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:49,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 15:44:49,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:44:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 15:44:49,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:44:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939924437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:49,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 15:44:49,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-03 15:44:49,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801767602] [2025-03-03 15:44:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:49,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:49,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:49,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:49,158 INFO L87 Difference]: Start difference. First operand 33025 states and 43521 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 15:44:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:50,155 INFO L93 Difference]: Finished difference Result 58693 states and 76393 transitions. [2025-03-03 15:44:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 168 [2025-03-03 15:44:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:50,290 INFO L225 Difference]: With dead ends: 58693 [2025-03-03 15:44:50,291 INFO L226 Difference]: Without dead ends: 33337 [2025-03-03 15:44:50,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 15:44:50,354 INFO L435 NwaCegarLoop]: 4176 mSDtfsCounter, 4102 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:50,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33337 states. [2025-03-03 15:44:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33337 to 33025. [2025-03-03 15:44:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33025 states, 28528 states have (on average 1.2781477846326417) internal successors, (36463), 28818 states have internal predecessors, (36463), 2447 states have call successors, (2447), 1833 states have call predecessors, (2447), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-03-03 15:44:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33025 states to 33025 states and 43359 transitions. [2025-03-03 15:44:51,706 INFO L78 Accepts]: Start accepts. Automaton has 33025 states and 43359 transitions. Word has length 168 [2025-03-03 15:44:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:44:51,706 INFO L471 AbstractCegarLoop]: Abstraction has 33025 states and 43359 transitions. [2025-03-03 15:44:51,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 15:44:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 33025 states and 43359 transitions. [2025-03-03 15:44:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-03 15:44:51,723 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:44:51,724 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, 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] [2025-03-03 15:44:51,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 15:44:51,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-03 15:44:51,924 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:44:51,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:44:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1409169648, now seen corresponding path program 1 times [2025-03-03 15:44:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:44:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882948153] [2025-03-03 15:44:51,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:44:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:44:51,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 15:44:51,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 15:44:51,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:44:51,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:44:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-03 15:44:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:44:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882948153] [2025-03-03 15:44:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882948153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:44:51,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:44:51,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 15:44:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729132858] [2025-03-03 15:44:51,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:44:51,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 15:44:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:44:51,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 15:44:51,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:44:51,949 INFO L87 Difference]: Start difference. First operand 33025 states and 43359 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 15:44:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:44:53,387 INFO L93 Difference]: Finished difference Result 58385 states and 75602 transitions. [2025-03-03 15:44:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 15:44:53,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 168 [2025-03-03 15:44:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:44:53,497 INFO L225 Difference]: With dead ends: 58385 [2025-03-03 15:44:53,497 INFO L226 Difference]: Without dead ends: 27499 [2025-03-03 15:44:53,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 15:44:53,557 INFO L435 NwaCegarLoop]: 4147 mSDtfsCounter, 183 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 8105 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:44:53,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 8105 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:44:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27499 states.