./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_label49+token_ring.09.cil-1.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 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:00:20,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:00:20,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 07:00:20,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:00:20,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:00:20,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:00:20,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:00:20,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:00:20,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:00:20,805 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:00:20,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:00:20,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:00:20,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:00:20,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:00:20,806 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:00:20,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:00:20,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:00:20,806 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:00:20,807 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:00:20,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:00:20,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:00:20,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:00:20,808 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 -> 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c [2025-03-08 07:00:21,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:00:21,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:00:21,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:00:21,022 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:00:21,022 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:00:21,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2025-03-08 07:00:22,134 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a5371fc/1638b51888674821b1afcc2fe44677fd/FLAGefd0a1f92 [2025-03-08 07:00:22,751 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:00:22,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2025-03-08 07:00:22,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a5371fc/1638b51888674821b1afcc2fe44677fd/FLAGefd0a1f92 [2025-03-08 07:00:23,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4a5371fc/1638b51888674821b1afcc2fe44677fd [2025-03-08 07:00:23,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:00:23,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:00:23,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:00:23,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:00:23,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:00:23,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:00:23" (1/1) ... [2025-03-08 07:00:23,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76530039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:23, skipping insertion in model container [2025-03-08 07:00:23,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:00:23" (1/1) ... [2025-03-08 07:00:23,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:00:24,506 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_label49+token_ring.09.cil-1.c[380593,380606] [2025-03-08 07:00:24,535 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_label49+token_ring.09.cil-1.c[383339,383352] [2025-03-08 07:00:24,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:00:24,728 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:00:25,215 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_label49+token_ring.09.cil-1.c[380593,380606] [2025-03-08 07:00:25,219 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_label49+token_ring.09.cil-1.c[383339,383352] [2025-03-08 07:00:25,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:00:25,283 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:00:25,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25 WrapperNode [2025-03-08 07:00:25,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:00:25,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:00:25,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:00:25,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:00:25,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,717 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13014 [2025-03-08 07:00:25,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:00:25,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:00:25,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:00:25,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:00:25,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,849 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]. [2025-03-08 07:00:25,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:25,981 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:26,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:26,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:26,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:26,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:00:26,141 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:00:26,141 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:00:26,141 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:00:26,142 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (1/1) ... [2025-03-08 07:00:26,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:00:26,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:00:26,167 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) [2025-03-08 07:00:26,170 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 [2025-03-08 07:00:26,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:00:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 07:00:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 07:00:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 07:00:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 07:00:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 07:00:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 07:00:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 07:00:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 07:00:26,188 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 07:00:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 07:00:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 07:00:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 07:00:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:00:26,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:00:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:00:26,283 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:00:26,285 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:00:32,188 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 07:00:32,189 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 07:00:32,189 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 07:00:32,189 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 07:00:32,190 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 07:00:32,190 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 07:00:32,190 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 07:00:32,380 INFO L? ?]: Removed 1737 outVars from TransFormulas that were not future-live. [2025-03-08 07:00:32,381 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:00:32,422 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:00:32,423 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:00:32,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:00:32 BoogieIcfgContainer [2025-03-08 07:00:32,423 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:00:32,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:00:32,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:00:32,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:00:32,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:00:23" (1/3) ... [2025-03-08 07:00:32,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600a258a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:00:32, skipping insertion in model container [2025-03-08 07:00:32,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:25" (2/3) ... [2025-03-08 07:00:32,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600a258a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:00:32, skipping insertion in model container [2025-03-08 07:00:32,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:00:32" (3/3) ... [2025-03-08 07:00:32,430 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.09.cil-1.c [2025-03-08 07:00:32,443 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:00:32,449 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label49+token_ring.09.cil-1.c that has 7 procedures, 2488 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2025-03-08 07:00:32,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:00:32,542 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;@2e65e30c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:00:32,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:00:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 2488 states, 2457 states have (on average 1.8416768416768416) internal successors, (4525), 2459 states have internal predecessors, (4525), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 07:00:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:32,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:32,569 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:32,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:32,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash -581836028, now seen corresponding path program 1 times [2025-03-08 07:00:32,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:32,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174370144] [2025-03-08 07:00:32,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:32,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:32,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:32,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:32,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:33,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:33,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174370144] [2025-03-08 07:00:33,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174370144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:33,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:33,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:33,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933124555] [2025-03-08 07:00:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:33,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:33,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:33,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:33,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:33,069 INFO L87 Difference]: Start difference. First operand has 2488 states, 2457 states have (on average 1.8416768416768416) internal successors, (4525), 2459 states have internal predecessors, (4525), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:33,766 INFO L93 Difference]: Finished difference Result 5281 states and 9643 transitions. [2025-03-08 07:00:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:00:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:33,795 INFO L225 Difference]: With dead ends: 5281 [2025-03-08 07:00:33,795 INFO L226 Difference]: Without dead ends: 2740 [2025-03-08 07:00:33,806 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 [2025-03-08 07:00:33,808 INFO L435 NwaCegarLoop]: 4392 mSDtfsCounter, 4919 mSDsluCounter, 8983 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 13375 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:33,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4936 Valid, 13375 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2025-03-08 07:00:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2717. [2025-03-08 07:00:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2661 states have (on average 1.808718526869598) internal successors, (4813), 2664 states have internal predecessors, (4813), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-03-08 07:00:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4896 transitions. [2025-03-08 07:00:34,011 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4896 transitions. Word has length 143 [2025-03-08 07:00:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:34,011 INFO L471 AbstractCegarLoop]: Abstraction has 2717 states and 4896 transitions. [2025-03-08 07:00:34,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:34,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4896 transitions. [2025-03-08 07:00:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:34,019 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:34,019 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:34,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:00:34,020 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:34,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 178846534, now seen corresponding path program 1 times [2025-03-08 07:00:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834413526] [2025-03-08 07:00:34,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:34,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:34,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:34,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:34,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:34,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834413526] [2025-03-08 07:00:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834413526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:34,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:34,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673422212] [2025-03-08 07:00:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:34,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:34,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:34,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:34,235 INFO L87 Difference]: Start difference. First operand 2717 states and 4896 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:34,550 INFO L93 Difference]: Finished difference Result 3356 states and 5923 transitions. [2025-03-08 07:00:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:34,563 INFO L225 Difference]: With dead ends: 3356 [2025-03-08 07:00:34,563 INFO L226 Difference]: Without dead ends: 2777 [2025-03-08 07:00:34,566 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 [2025-03-08 07:00:34,567 INFO L435 NwaCegarLoop]: 4311 mSDtfsCounter, 4592 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 12808 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:34,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4609 Valid, 12808 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 07:00:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2025-03-08 07:00:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2717. [2025-03-08 07:00:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2661 states have (on average 1.807966929725667) internal successors, (4811), 2664 states have internal predecessors, (4811), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-03-08 07:00:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4894 transitions. [2025-03-08 07:00:34,637 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4894 transitions. Word has length 143 [2025-03-08 07:00:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:34,637 INFO L471 AbstractCegarLoop]: Abstraction has 2717 states and 4894 transitions. [2025-03-08 07:00:34,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4894 transitions. [2025-03-08 07:00:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:34,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:34,638 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:34,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:00:34,639 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:34,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1301125733, now seen corresponding path program 1 times [2025-03-08 07:00:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:34,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140439742] [2025-03-08 07:00:34,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:34,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:34,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:34,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:34,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:34,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140439742] [2025-03-08 07:00:34,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140439742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:34,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:34,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:34,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096361514] [2025-03-08 07:00:34,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:34,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:34,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:34,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:34,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:34,820 INFO L87 Difference]: Start difference. First operand 2717 states and 4894 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:35,422 INFO L93 Difference]: Finished difference Result 3669 states and 6413 transitions. [2025-03-08 07:00:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:35,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:35,437 INFO L225 Difference]: With dead ends: 3669 [2025-03-08 07:00:35,437 INFO L226 Difference]: Without dead ends: 3090 [2025-03-08 07:00:35,442 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 [2025-03-08 07:00:35,444 INFO L435 NwaCegarLoop]: 4563 mSDtfsCounter, 4848 mSDsluCounter, 13717 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4865 SdHoareTripleChecker+Valid, 18280 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:35,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4865 Valid, 18280 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2025-03-08 07:00:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2991. [2025-03-08 07:00:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2910 states have (on average 1.7859106529209623) internal successors, (5197), 2914 states have internal predecessors, (5197), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2025-03-08 07:00:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 5319 transitions. [2025-03-08 07:00:35,519 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 5319 transitions. Word has length 143 [2025-03-08 07:00:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:35,520 INFO L471 AbstractCegarLoop]: Abstraction has 2991 states and 5319 transitions. [2025-03-08 07:00:35,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 5319 transitions. [2025-03-08 07:00:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:35,522 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:35,522 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:35,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 07:00:35,522 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:35,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash -602334362, now seen corresponding path program 1 times [2025-03-08 07:00:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:35,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074284523] [2025-03-08 07:00:35,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:35,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:35,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:35,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:35,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:35,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074284523] [2025-03-08 07:00:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074284523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:35,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398352662] [2025-03-08 07:00:35,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:35,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:35,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:35,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:35,746 INFO L87 Difference]: Start difference. First operand 2991 states and 5319 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:36,354 INFO L93 Difference]: Finished difference Result 4532 states and 7769 transitions. [2025-03-08 07:00:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:36,372 INFO L225 Difference]: With dead ends: 4532 [2025-03-08 07:00:36,372 INFO L226 Difference]: Without dead ends: 3679 [2025-03-08 07:00:36,377 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 [2025-03-08 07:00:36,378 INFO L435 NwaCegarLoop]: 4555 mSDtfsCounter, 4840 mSDsluCounter, 13695 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 18250 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:36,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4857 Valid, 18250 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:36,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2025-03-08 07:00:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3571. [2025-03-08 07:00:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3438 states have (on average 1.752763234438627) internal successors, (6026), 3446 states have internal predecessors, (6026), 95 states have call successors, (95), 30 states have call predecessors, (95), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2025-03-08 07:00:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 6232 transitions. [2025-03-08 07:00:36,481 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 6232 transitions. Word has length 143 [2025-03-08 07:00:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:36,481 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 6232 transitions. [2025-03-08 07:00:36,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 6232 transitions. [2025-03-08 07:00:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:36,486 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:36,487 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:36,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 07:00:36,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:36,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:36,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1243420505, now seen corresponding path program 1 times [2025-03-08 07:00:36,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:36,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499893209] [2025-03-08 07:00:36,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:36,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:36,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:36,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:36,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:36,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499893209] [2025-03-08 07:00:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499893209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296634454] [2025-03-08 07:00:36,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:36,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:36,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:36,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:36,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:36,617 INFO L87 Difference]: Start difference. First operand 3571 states and 6232 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:37,285 INFO L93 Difference]: Finished difference Result 6392 states and 10752 transitions. [2025-03-08 07:00:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:37,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:37,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:37,300 INFO L225 Difference]: With dead ends: 6392 [2025-03-08 07:00:37,301 INFO L226 Difference]: Without dead ends: 4959 [2025-03-08 07:00:37,304 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 [2025-03-08 07:00:37,305 INFO L435 NwaCegarLoop]: 4552 mSDtfsCounter, 4835 mSDsluCounter, 13686 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4852 SdHoareTripleChecker+Valid, 18238 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:37,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4852 Valid, 18238 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2025-03-08 07:00:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 4824. [2025-03-08 07:00:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4581 states have (on average 1.7135996507312814) internal successors, (7850), 4603 states have internal predecessors, (7850), 167 states have call successors, (167), 54 states have call predecessors, (167), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2025-03-08 07:00:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 8248 transitions. [2025-03-08 07:00:37,479 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 8248 transitions. Word has length 143 [2025-03-08 07:00:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:37,480 INFO L471 AbstractCegarLoop]: Abstraction has 4824 states and 8248 transitions. [2025-03-08 07:00:37,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 8248 transitions. [2025-03-08 07:00:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:37,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:37,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:37,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 07:00:37,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:37,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash -17174714, now seen corresponding path program 1 times [2025-03-08 07:00:37,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:37,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988642262] [2025-03-08 07:00:37,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:37,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:37,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:37,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:37,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:37,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988642262] [2025-03-08 07:00:37,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988642262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:37,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:37,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:37,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440487611] [2025-03-08 07:00:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:37,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:37,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:37,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:37,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:37,620 INFO L87 Difference]: Start difference. First operand 4824 states and 8248 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:38,268 INFO L93 Difference]: Finished difference Result 10465 states and 17466 transitions. [2025-03-08 07:00:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:38,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:38,297 INFO L225 Difference]: With dead ends: 10465 [2025-03-08 07:00:38,297 INFO L226 Difference]: Without dead ends: 7779 [2025-03-08 07:00:38,308 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 [2025-03-08 07:00:38,309 INFO L435 NwaCegarLoop]: 4549 mSDtfsCounter, 4830 mSDsluCounter, 13677 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4847 SdHoareTripleChecker+Valid, 18226 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:38,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4847 Valid, 18226 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2025-03-08 07:00:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 7591. [2025-03-08 07:00:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 7110 states have (on average 1.6824191279887482) internal successors, (11962), 7178 states have internal predecessors, (11962), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-08 07:00:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 12840 transitions. [2025-03-08 07:00:38,505 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 12840 transitions. Word has length 143 [2025-03-08 07:00:38,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:38,505 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 12840 transitions. [2025-03-08 07:00:38,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:38,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 12840 transitions. [2025-03-08 07:00:38,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:38,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:38,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:38,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 07:00:38,509 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:38,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1269307591, now seen corresponding path program 1 times [2025-03-08 07:00:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:38,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030735752] [2025-03-08 07:00:38,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:38,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:38,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:38,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:38,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:38,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:38,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:38,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030735752] [2025-03-08 07:00:38,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030735752] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:38,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:38,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032397580] [2025-03-08 07:00:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:38,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:38,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:38,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:38,665 INFO L87 Difference]: Start difference. First operand 7591 states and 12840 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:39,013 INFO L93 Difference]: Finished difference Result 14206 states and 24060 transitions. [2025-03-08 07:00:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:39,039 INFO L225 Difference]: With dead ends: 14206 [2025-03-08 07:00:39,040 INFO L226 Difference]: Without dead ends: 8753 [2025-03-08 07:00:39,054 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 [2025-03-08 07:00:39,055 INFO L435 NwaCegarLoop]: 4298 mSDtfsCounter, 4584 mSDsluCounter, 8472 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 12770 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:39,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 12770 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 07:00:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2025-03-08 07:00:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 7591. [2025-03-08 07:00:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 7110 states have (on average 1.680028129395218) internal successors, (11945), 7178 states have internal predecessors, (11945), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-08 07:00:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 12823 transitions. [2025-03-08 07:00:39,262 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 12823 transitions. Word has length 143 [2025-03-08 07:00:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:39,262 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 12823 transitions. [2025-03-08 07:00:39,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 12823 transitions. [2025-03-08 07:00:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:39,268 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:39,268 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:39,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 07:00:39,268 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:39,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1044497626, now seen corresponding path program 1 times [2025-03-08 07:00:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:39,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064152859] [2025-03-08 07:00:39,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:39,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:39,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:39,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:39,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064152859] [2025-03-08 07:00:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064152859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:39,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467643770] [2025-03-08 07:00:39,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:39,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:39,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:39,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:39,358 INFO L87 Difference]: Start difference. First operand 7591 states and 12823 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:39,744 INFO L93 Difference]: Finished difference Result 14123 states and 23860 transitions. [2025-03-08 07:00:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:39,770 INFO L225 Difference]: With dead ends: 14123 [2025-03-08 07:00:39,770 INFO L226 Difference]: Without dead ends: 8670 [2025-03-08 07:00:39,783 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 [2025-03-08 07:00:39,783 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4581 mSDsluCounter, 8467 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4598 SdHoareTripleChecker+Valid, 12762 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:39,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4598 Valid, 12762 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 07:00:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2025-03-08 07:00:39,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 7591. [2025-03-08 07:00:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 7110 states have (on average 1.6776371308016877) internal successors, (11928), 7178 states have internal predecessors, (11928), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-08 07:00:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 12806 transitions. [2025-03-08 07:00:39,978 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 12806 transitions. Word has length 143 [2025-03-08 07:00:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:39,978 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 12806 transitions. [2025-03-08 07:00:39,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 12806 transitions. [2025-03-08 07:00:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:39,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:39,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:39,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 07:00:39,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:39,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2067452135, now seen corresponding path program 1 times [2025-03-08 07:00:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:39,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834493721] [2025-03-08 07:00:39,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:39,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:39,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:39,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:39,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:39,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:40,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:40,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834493721] [2025-03-08 07:00:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834493721] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:40,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745782157] [2025-03-08 07:00:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:40,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:40,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:40,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:40,086 INFO L87 Difference]: Start difference. First operand 7591 states and 12806 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:40,828 INFO L93 Difference]: Finished difference Result 19396 states and 32614 transitions. [2025-03-08 07:00:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:40,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:40,872 INFO L225 Difference]: With dead ends: 19396 [2025-03-08 07:00:40,872 INFO L226 Difference]: Without dead ends: 13943 [2025-03-08 07:00:40,890 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 [2025-03-08 07:00:40,891 INFO L435 NwaCegarLoop]: 4536 mSDtfsCounter, 4809 mSDsluCounter, 13640 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4826 SdHoareTripleChecker+Valid, 18176 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:40,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4826 Valid, 18176 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13943 states. [2025-03-08 07:00:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13943 to 13692. [2025-03-08 07:00:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13692 states, 12681 states have (on average 1.662644901821623) internal successors, (21084), 12895 states have internal predecessors, (21084), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-08 07:00:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13692 states to 13692 states and 23306 transitions. [2025-03-08 07:00:41,421 INFO L78 Accepts]: Start accepts. Automaton has 13692 states and 23306 transitions. Word has length 143 [2025-03-08 07:00:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:41,421 INFO L471 AbstractCegarLoop]: Abstraction has 13692 states and 23306 transitions. [2025-03-08 07:00:41,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13692 states and 23306 transitions. [2025-03-08 07:00:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:41,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:41,429 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:41,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 07:00:41,429 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:41,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 920911622, now seen corresponding path program 1 times [2025-03-08 07:00:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285479753] [2025-03-08 07:00:41,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:41,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:41,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:41,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:41,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285479753] [2025-03-08 07:00:41,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285479753] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:41,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:41,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729046985] [2025-03-08 07:00:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:41,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:41,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:41,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:41,576 INFO L87 Difference]: Start difference. First operand 13692 states and 23306 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:42,728 INFO L93 Difference]: Finished difference Result 41733 states and 72193 transitions. [2025-03-08 07:00:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:42,830 INFO L225 Difference]: With dead ends: 41733 [2025-03-08 07:00:42,830 INFO L226 Difference]: Without dead ends: 30179 [2025-03-08 07:00:42,867 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 [2025-03-08 07:00:42,868 INFO L435 NwaCegarLoop]: 4531 mSDtfsCounter, 5088 mSDsluCounter, 13620 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 18151 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:42,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 18151 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:00:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30179 states. [2025-03-08 07:00:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30179 to 27499. [2025-03-08 07:00:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27499 states, 25298 states have (on average 1.6693809787334968) internal successors, (42232), 25966 states have internal predecessors, (42232), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-08 07:00:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27499 states to 27499 states and 48614 transitions. [2025-03-08 07:00:43,862 INFO L78 Accepts]: Start accepts. Automaton has 27499 states and 48614 transitions. Word has length 143 [2025-03-08 07:00:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:43,862 INFO L471 AbstractCegarLoop]: Abstraction has 27499 states and 48614 transitions. [2025-03-08 07:00:43,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27499 states and 48614 transitions. [2025-03-08 07:00:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:43,872 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:43,872 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:43,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 07:00:43,872 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:43,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash -362999545, now seen corresponding path program 1 times [2025-03-08 07:00:43,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:43,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439735965] [2025-03-08 07:00:43,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:43,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:43,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:43,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:43,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:43,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439735965] [2025-03-08 07:00:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439735965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:43,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:43,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467199087] [2025-03-08 07:00:43,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:43,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:43,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:43,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:43,977 INFO L87 Difference]: Start difference. First operand 27499 states and 48614 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:46,308 INFO L93 Difference]: Finished difference Result 88540 states and 162999 transitions. [2025-03-08 07:00:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:46,534 INFO L225 Difference]: With dead ends: 88540 [2025-03-08 07:00:46,534 INFO L226 Difference]: Without dead ends: 63179 [2025-03-08 07:00:46,603 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 [2025-03-08 07:00:46,604 INFO L435 NwaCegarLoop]: 4524 mSDtfsCounter, 5020 mSDsluCounter, 13601 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5047 SdHoareTripleChecker+Valid, 18125 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:46,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5047 Valid, 18125 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:46,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63179 states. [2025-03-08 07:00:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63179 to 58905. [2025-03-08 07:00:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58905 states, 53870 states have (on average 1.6846111007982179) internal successors, (90750), 55932 states have internal predecessors, (90750), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-08 07:00:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58905 states to 58905 states and 111532 transitions. [2025-03-08 07:00:49,038 INFO L78 Accepts]: Start accepts. Automaton has 58905 states and 111532 transitions. Word has length 143 [2025-03-08 07:00:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:49,039 INFO L471 AbstractCegarLoop]: Abstraction has 58905 states and 111532 transitions. [2025-03-08 07:00:49,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 58905 states and 111532 transitions. [2025-03-08 07:00:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:49,057 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:49,057 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:49,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 07:00:49,057 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:49,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1186681016, now seen corresponding path program 1 times [2025-03-08 07:00:49,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:49,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905204897] [2025-03-08 07:00:49,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:49,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:49,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:49,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:49,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:49,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:49,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905204897] [2025-03-08 07:00:49,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905204897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:49,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:49,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:49,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135154647] [2025-03-08 07:00:49,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:49,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:49,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:49,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:49,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:49,150 INFO L87 Difference]: Start difference. First operand 58905 states and 111532 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:52,426 INFO L93 Difference]: Finished difference Result 133184 states and 264178 transitions. [2025-03-08 07:00:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:52,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:00:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:52,858 INFO L225 Difference]: With dead ends: 133184 [2025-03-08 07:00:52,858 INFO L226 Difference]: Without dead ends: 76417 [2025-03-08 07:00:53,063 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 [2025-03-08 07:00:53,064 INFO L435 NwaCegarLoop]: 4284 mSDtfsCounter, 4572 mSDsluCounter, 8444 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 12728 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:53,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 12728 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 07:00:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76417 states. [2025-03-08 07:00:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76417 to 58905. [2025-03-08 07:00:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58905 states, 53870 states have (on average 1.682216447002042) internal successors, (90621), 55932 states have internal predecessors, (90621), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-08 07:00:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58905 states to 58905 states and 111403 transitions. [2025-03-08 07:00:57,361 INFO L78 Accepts]: Start accepts. Automaton has 58905 states and 111403 transitions. Word has length 143 [2025-03-08 07:00:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:57,361 INFO L471 AbstractCegarLoop]: Abstraction has 58905 states and 111403 transitions. [2025-03-08 07:00:57,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 58905 states and 111403 transitions. [2025-03-08 07:00:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 07:00:57,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:57,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:57,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 07:00:57,386 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:57,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:57,387 INFO L85 PathProgramCache]: Analyzing trace with hash -104872729, now seen corresponding path program 1 times [2025-03-08 07:00:57,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:57,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959655409] [2025-03-08 07:00:57,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:57,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 07:00:57,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 07:00:57,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:57,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:57,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:57,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959655409] [2025-03-08 07:00:57,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959655409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:57,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:57,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260056013] [2025-03-08 07:00:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:57,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:57,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:57,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:57,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:57,816 INFO L87 Difference]: Start difference. First operand 58905 states and 111403 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:00,165 INFO L93 Difference]: Finished difference Result 130995 states and 259542 transitions. [2025-03-08 07:01:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:01:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-03-08 07:01:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:00,508 INFO L225 Difference]: With dead ends: 130995 [2025-03-08 07:01:00,509 INFO L226 Difference]: Without dead ends: 74228 [2025-03-08 07:01:00,766 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 [2025-03-08 07:01:00,769 INFO L435 NwaCegarLoop]: 4281 mSDtfsCounter, 4569 mSDsluCounter, 8439 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4586 SdHoareTripleChecker+Valid, 12720 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 07:01:00,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4586 Valid, 12720 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 07:01:00,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74228 states.