./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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_label48+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 d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:06:22,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:06:22,916 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:06:22,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:06:22,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:06:22,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:06:22,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:06:22,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:06:22,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:06:22,944 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:06:22,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:06:22,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:06:22,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:06:22,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:06:22,945 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:06:22,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:06:22,946 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:06:22,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:22,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:06:22,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:06:22,947 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 -> d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c [2025-03-16 20:06:23,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:06:23,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:06:23,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:06:23,200 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:06:23,200 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:06:23,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2025-03-16 20:06:24,393 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102645d87/8d6f71b5712c4f939a22dd6e9c89d315/FLAGbc58d43be [2025-03-16 20:06:24,931 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:06:24,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2025-03-16 20:06:24,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102645d87/8d6f71b5712c4f939a22dd6e9c89d315/FLAGbc58d43be [2025-03-16 20:06:24,992 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/102645d87/8d6f71b5712c4f939a22dd6e9c89d315 [2025-03-16 20:06:24,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:06:24,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:06:24,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:24,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:06:25,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:06:25,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:24" (1/1) ... [2025-03-16 20:06:25,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bea4536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:25, skipping insertion in model container [2025-03-16 20:06:25,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:24" (1/1) ... [2025-03-16 20:06:25,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:06:26,194 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_label48+token_ring.09.cil-1.c[375709,375722] [2025-03-16 20:06:26,227 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_label48+token_ring.09.cil-1.c[383339,383352] [2025-03-16 20:06:26,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:26,429 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:06:26,925 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_label48+token_ring.09.cil-1.c[375709,375722] [2025-03-16 20:06:26,932 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_label48+token_ring.09.cil-1.c[383339,383352] [2025-03-16 20:06:26,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:26,996 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:06:26,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26 WrapperNode [2025-03-16 20:06:26,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:26,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:26,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:06:26,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:06:27,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,452 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13014 [2025-03-16 20:06:27,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:27,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:06:27,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:06:27,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:06:27,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,577 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]. [2025-03-16 20:06:27,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,753 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:06:27,853 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:06:27,854 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:06:27,854 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:06:27,855 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (1/1) ... [2025-03-16 20:06:27,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:27,881 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) [2025-03-16 20:06:27,883 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 [2025-03-16 20:06:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:06:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:06:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:06:27,902 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:06:27,902 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:06:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:06:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:06:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:06:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:06:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:06:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:06:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:06:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:06:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:06:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:06:27,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:06:28,022 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:06:28,023 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:06:34,009 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:06:34,010 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:06:34,010 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:06:34,010 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:06:34,011 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:06:34,011 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:06:34,011 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:06:34,238 INFO L? ?]: Removed 1725 outVars from TransFormulas that were not future-live. [2025-03-16 20:06:34,239 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:06:34,297 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:06:34,298 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:06:34,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:34 BoogieIcfgContainer [2025-03-16 20:06:34,298 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:06:34,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:06:34,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:06:34,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:06:34,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:06:24" (1/3) ... [2025-03-16 20:06:34,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a19615b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:34, skipping insertion in model container [2025-03-16 20:06:34,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:26" (2/3) ... [2025-03-16 20:06:34,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a19615b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:34, skipping insertion in model container [2025-03-16 20:06:34,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:34" (3/3) ... [2025-03-16 20:06:34,306 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.09.cil-1.c [2025-03-16 20:06:34,316 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:06:34,318 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label48+token_ring.09.cil-1.c that has 7 procedures, 2412 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2025-03-16 20:06:34,414 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:06:34,424 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;@64b2cabd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:06:34,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:06:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 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) [2025-03-16 20:06:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:34,448 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:34,448 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] [2025-03-16 20:06:34,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:34,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash -838048785, now seen corresponding path program 1 times [2025-03-16 20:06:34,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:34,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275325431] [2025-03-16 20:06:34,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:34,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:34,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:34,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:34,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:35,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275325431] [2025-03-16 20:06:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275325431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:35,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:35,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8163989] [2025-03-16 20:06:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:35,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:35,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:35,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:35,150 INFO L87 Difference]: Start difference. First operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 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 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2025-03-16 20:06:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:35,814 INFO L93 Difference]: Finished difference Result 5120 states and 9482 transitions. [2025-03-16 20:06:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:06:35,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:35,846 INFO L225 Difference]: With dead ends: 5120 [2025-03-16 20:06:35,846 INFO L226 Difference]: Without dead ends: 2715 [2025-03-16 20:06:35,859 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 [2025-03-16 20:06:35,862 INFO L435 NwaCegarLoop]: 4325 mSDtfsCounter, 4827 mSDsluCounter, 8846 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 13171 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:35,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4844 Valid, 13171 Invalid, 529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-03-16 20:06:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2692. [2025-03-16 20:06:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2636 states have (on average 1.8163884673748103) internal successors, (4788), 2639 states have internal predecessors, (4788), 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) [2025-03-16 20:06:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4871 transitions. [2025-03-16 20:06:36,006 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4871 transitions. Word has length 131 [2025-03-16 20:06:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:36,006 INFO L471 AbstractCegarLoop]: Abstraction has 2692 states and 4871 transitions. [2025-03-16 20:06:36,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2025-03-16 20:06:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4871 transitions. [2025-03-16 20:06:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:36,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:36,013 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] [2025-03-16 20:06:36,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:06:36,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:36,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1792194191, now seen corresponding path program 1 times [2025-03-16 20:06:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767830664] [2025-03-16 20:06:36,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:36,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:36,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:36,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:36,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767830664] [2025-03-16 20:06:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767830664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475325796] [2025-03-16 20:06:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:36,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:36,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:36,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:36,251 INFO L87 Difference]: Start difference. First operand 2692 states and 4871 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:36,879 INFO L93 Difference]: Finished difference Result 3610 states and 6360 transitions. [2025-03-16 20:06:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:36,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:36,893 INFO L225 Difference]: With dead ends: 3610 [2025-03-16 20:06:36,894 INFO L226 Difference]: Without dead ends: 3054 [2025-03-16 20:06:36,897 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 [2025-03-16 20:06:36,898 INFO L435 NwaCegarLoop]: 4559 mSDtfsCounter, 4822 mSDsluCounter, 13704 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:36,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 18263 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2025-03-16 20:06:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2955. [2025-03-16 20:06:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2874 states have (on average 1.7967988865692415) internal successors, (5164), 2878 states have internal predecessors, (5164), 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) [2025-03-16 20:06:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 5286 transitions. [2025-03-16 20:06:36,975 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 5286 transitions. Word has length 131 [2025-03-16 20:06:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:36,976 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 5286 transitions. [2025-03-16 20:06:36,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 5286 transitions. [2025-03-16 20:06:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:36,977 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:36,977 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] [2025-03-16 20:06:36,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:06:36,977 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:36,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1679091634, now seen corresponding path program 1 times [2025-03-16 20:06:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065705761] [2025-03-16 20:06:36,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:36,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:36,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:36,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:36,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065705761] [2025-03-16 20:06:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065705761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420104811] [2025-03-16 20:06:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:37,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:37,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:37,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:37,166 INFO L87 Difference]: Start difference. First operand 2955 states and 5286 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:37,770 INFO L93 Difference]: Finished difference Result 4448 states and 7702 transitions. [2025-03-16 20:06:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:37,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:37,787 INFO L225 Difference]: With dead ends: 4448 [2025-03-16 20:06:37,787 INFO L226 Difference]: Without dead ends: 3629 [2025-03-16 20:06:37,793 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 [2025-03-16 20:06:37,793 INFO L435 NwaCegarLoop]: 4555 mSDtfsCounter, 4817 mSDsluCounter, 13692 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 18247 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:37,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4834 Valid, 18247 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2025-03-16 20:06:37,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3516. [2025-03-16 20:06:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3383 states have (on average 1.767366242979604) internal successors, (5979), 3391 states have internal predecessors, (5979), 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) [2025-03-16 20:06:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 6185 transitions. [2025-03-16 20:06:37,895 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 6185 transitions. Word has length 131 [2025-03-16 20:06:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:37,895 INFO L471 AbstractCegarLoop]: Abstraction has 3516 states and 6185 transitions. [2025-03-16 20:06:37,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 6185 transitions. [2025-03-16 20:06:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:37,897 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:37,897 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] [2025-03-16 20:06:37,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:06:37,897 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:37,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1534067375, now seen corresponding path program 1 times [2025-03-16 20:06:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92282603] [2025-03-16 20:06:37,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:37,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:37,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:37,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:37,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:38,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:38,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92282603] [2025-03-16 20:06:38,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92282603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:38,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:38,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286011175] [2025-03-16 20:06:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:38,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:38,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:38,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:38,067 INFO L87 Difference]: Start difference. First operand 3516 states and 6185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:38,674 INFO L93 Difference]: Finished difference Result 6259 states and 10659 transitions. [2025-03-16 20:06:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:38,699 INFO L225 Difference]: With dead ends: 6259 [2025-03-16 20:06:38,699 INFO L226 Difference]: Without dead ends: 4879 [2025-03-16 20:06:38,705 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 [2025-03-16 20:06:38,707 INFO L435 NwaCegarLoop]: 4552 mSDtfsCounter, 4812 mSDsluCounter, 13683 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 18235 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:38,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4829 Valid, 18235 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2025-03-16 20:06:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4737. [2025-03-16 20:06:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4494 states have (on average 1.7327547841566533) internal successors, (7787), 4516 states have internal predecessors, (7787), 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) [2025-03-16 20:06:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 8185 transitions. [2025-03-16 20:06:38,919 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 8185 transitions. Word has length 131 [2025-03-16 20:06:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:38,919 INFO L471 AbstractCegarLoop]: Abstraction has 4737 states and 8185 transitions. [2025-03-16 20:06:38,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 8185 transitions. [2025-03-16 20:06:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:38,925 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:38,925 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] [2025-03-16 20:06:38,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:06:38,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:38,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2053359662, now seen corresponding path program 1 times [2025-03-16 20:06:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:38,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545418643] [2025-03-16 20:06:38,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:38,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:38,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:38,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:38,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:39,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545418643] [2025-03-16 20:06:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545418643] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:39,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165713842] [2025-03-16 20:06:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:39,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:39,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:39,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:39,055 INFO L87 Difference]: Start difference. First operand 4737 states and 8185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:39,719 INFO L93 Difference]: Finished difference Result 10258 states and 17369 transitions. [2025-03-16 20:06:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:39,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:39,752 INFO L225 Difference]: With dead ends: 10258 [2025-03-16 20:06:39,753 INFO L226 Difference]: Without dead ends: 7657 [2025-03-16 20:06:39,764 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 [2025-03-16 20:06:39,764 INFO L435 NwaCegarLoop]: 4549 mSDtfsCounter, 4807 mSDsluCounter, 13674 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4824 SdHoareTripleChecker+Valid, 18223 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:39,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4824 Valid, 18223 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:39,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2025-03-16 20:06:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 7458. [2025-03-16 20:06:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 6977 states have (on average 1.706034112082557) internal successors, (11903), 7045 states have internal predecessors, (11903), 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) [2025-03-16 20:06:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 12781 transitions. [2025-03-16 20:06:40,006 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 12781 transitions. Word has length 131 [2025-03-16 20:06:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:40,007 INFO L471 AbstractCegarLoop]: Abstraction has 7458 states and 12781 transitions. [2025-03-16 20:06:40,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 12781 transitions. [2025-03-16 20:06:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:40,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:40,014 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] [2025-03-16 20:06:40,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:06:40,014 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:40,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:40,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1255024945, now seen corresponding path program 1 times [2025-03-16 20:06:40,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070556138] [2025-03-16 20:06:40,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:40,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:40,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:40,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:40,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070556138] [2025-03-16 20:06:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070556138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:40,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:40,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:40,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811576045] [2025-03-16 20:06:40,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:40,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:40,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:40,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:40,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:40,194 INFO L87 Difference]: Start difference. First operand 7458 states and 12781 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:40,886 INFO L93 Difference]: Finished difference Result 19313 states and 33155 transitions. [2025-03-16 20:06:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:40,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:40,940 INFO L225 Difference]: With dead ends: 19313 [2025-03-16 20:06:40,940 INFO L226 Difference]: Without dead ends: 13991 [2025-03-16 20:06:40,961 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 [2025-03-16 20:06:40,962 INFO L435 NwaCegarLoop]: 4546 mSDtfsCounter, 4802 mSDsluCounter, 13665 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 18211 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:40,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 18211 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2025-03-16 20:06:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13683. [2025-03-16 20:06:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.699100378787879) internal successors, (21531), 12886 states have internal predecessors, (21531), 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) [2025-03-16 20:06:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23753 transitions. [2025-03-16 20:06:41,380 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23753 transitions. Word has length 131 [2025-03-16 20:06:41,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:41,381 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23753 transitions. [2025-03-16 20:06:41,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23753 transitions. [2025-03-16 20:06:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:41,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:41,391 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] [2025-03-16 20:06:41,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:06:41,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:41,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1963388942, now seen corresponding path program 1 times [2025-03-16 20:06:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944822938] [2025-03-16 20:06:41,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:41,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:41,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:41,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:41,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:41,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:41,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944822938] [2025-03-16 20:06:41,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944822938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:41,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:41,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912257704] [2025-03-16 20:06:41,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:41,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:41,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:41,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:41,498 INFO L87 Difference]: Start difference. First operand 13683 states and 23753 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:42,055 INFO L93 Difference]: Finished difference Result 28660 states and 50738 transitions. [2025-03-16 20:06:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:42,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:42,140 INFO L225 Difference]: With dead ends: 28660 [2025-03-16 20:06:42,140 INFO L226 Difference]: Without dead ends: 17113 [2025-03-16 20:06:42,174 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 [2025-03-16 20:06:42,175 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4564 mSDsluCounter, 8465 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12760 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:42,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 12760 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17113 states. [2025-03-16 20:06:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17113 to 13683. [2025-03-16 20:06:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6964962121212122) internal successors, (21498), 12886 states have internal predecessors, (21498), 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) [2025-03-16 20:06:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23720 transitions. [2025-03-16 20:06:42,774 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23720 transitions. Word has length 131 [2025-03-16 20:06:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:42,775 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23720 transitions. [2025-03-16 20:06:42,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23720 transitions. [2025-03-16 20:06:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:42,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:42,782 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] [2025-03-16 20:06:42,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:06:42,782 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:42,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -127546095, now seen corresponding path program 1 times [2025-03-16 20:06:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447473859] [2025-03-16 20:06:42,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:42,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:42,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:42,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:42,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:42,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:42,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447473859] [2025-03-16 20:06:42,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447473859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:42,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:42,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656672263] [2025-03-16 20:06:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:42,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:42,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:42,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:42,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:42,876 INFO L87 Difference]: Start difference. First operand 13683 states and 23720 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:43,509 INFO L93 Difference]: Finished difference Result 28415 states and 50182 transitions. [2025-03-16 20:06:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:43,576 INFO L225 Difference]: With dead ends: 28415 [2025-03-16 20:06:43,576 INFO L226 Difference]: Without dead ends: 16868 [2025-03-16 20:06:43,611 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 [2025-03-16 20:06:43,611 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4561 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 12752 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:43,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 12752 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2025-03-16 20:06:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13683. [2025-03-16 20:06:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6938920454545454) internal successors, (21465), 12886 states have internal predecessors, (21465), 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) [2025-03-16 20:06:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23687 transitions. [2025-03-16 20:06:44,224 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23687 transitions. Word has length 131 [2025-03-16 20:06:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:44,225 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23687 transitions. [2025-03-16 20:06:44,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23687 transitions. [2025-03-16 20:06:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:44,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:44,232 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] [2025-03-16 20:06:44,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:06:44,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:44,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash -68325358, now seen corresponding path program 1 times [2025-03-16 20:06:44,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:44,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804611895] [2025-03-16 20:06:44,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:44,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:44,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:44,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:44,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:44,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804611895] [2025-03-16 20:06:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804611895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146477278] [2025-03-16 20:06:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:44,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:44,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:44,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:44,375 INFO L87 Difference]: Start difference. First operand 13683 states and 23687 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:45,502 INFO L93 Difference]: Finished difference Result 41402 states and 73032 transitions. [2025-03-16 20:06:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:45,626 INFO L225 Difference]: With dead ends: 41402 [2025-03-16 20:06:45,626 INFO L226 Difference]: Without dead ends: 29855 [2025-03-16 20:06:45,665 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 [2025-03-16 20:06:45,665 INFO L435 NwaCegarLoop]: 4527 mSDtfsCounter, 5032 mSDsluCounter, 13607 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 18134 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:45,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5059 Valid, 18134 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29855 states. [2025-03-16 20:06:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29855 to 27495. [2025-03-16 20:06:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.7002846524867556) internal successors, (43007), 25962 states have internal predecessors, (43007), 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) [2025-03-16 20:06:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49389 transitions. [2025-03-16 20:06:46,639 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49389 transitions. Word has length 131 [2025-03-16 20:06:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:46,639 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49389 transitions. [2025-03-16 20:06:46,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49389 transitions. [2025-03-16 20:06:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:46,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:46,650 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:46,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:06:46,651 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:46,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1062461267, now seen corresponding path program 1 times [2025-03-16 20:06:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:46,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22843098] [2025-03-16 20:06:46,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:46,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:46,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:46,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:46,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:46,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:46,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22843098] [2025-03-16 20:06:46,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22843098] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:46,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:46,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:46,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842181658] [2025-03-16 20:06:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:46,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:46,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:46,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:46,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:46,755 INFO L87 Difference]: Start difference. First operand 27495 states and 49389 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:47,738 INFO L93 Difference]: Finished difference Result 60164 states and 111448 transitions. [2025-03-16 20:06:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:47,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:47,883 INFO L225 Difference]: With dead ends: 60164 [2025-03-16 20:06:47,883 INFO L226 Difference]: Without dead ends: 34805 [2025-03-16 20:06:47,955 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 [2025-03-16 20:06:47,956 INFO L435 NwaCegarLoop]: 4285 mSDtfsCounter, 4554 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 12730 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:47,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4571 Valid, 12730 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:47,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34805 states. [2025-03-16 20:06:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34805 to 27495. [2025-03-16 20:06:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.697714873092433) internal successors, (42942), 25962 states have internal predecessors, (42942), 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) [2025-03-16 20:06:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49324 transitions. [2025-03-16 20:06:49,412 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49324 transitions. Word has length 131 [2025-03-16 20:06:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:49,413 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49324 transitions. [2025-03-16 20:06:49,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49324 transitions. [2025-03-16 20:06:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:49,425 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:49,426 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] [2025-03-16 20:06:49,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:06:49,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:49,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash 129106930, now seen corresponding path program 1 times [2025-03-16 20:06:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100814360] [2025-03-16 20:06:49,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:49,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:49,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:49,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:49,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:49,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100814360] [2025-03-16 20:06:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100814360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:49,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019569086] [2025-03-16 20:06:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:49,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:49,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:49,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:49,558 INFO L87 Difference]: Start difference. First operand 27495 states and 49324 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:51,869 INFO L93 Difference]: Finished difference Result 88032 states and 164633 transitions. [2025-03-16 20:06:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:52,129 INFO L225 Difference]: With dead ends: 88032 [2025-03-16 20:06:52,129 INFO L226 Difference]: Without dead ends: 62673 [2025-03-16 20:06:52,213 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 [2025-03-16 20:06:52,214 INFO L435 NwaCegarLoop]: 4519 mSDtfsCounter, 4965 mSDsluCounter, 13584 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 18103 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:52,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4992 Valid, 18103 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62673 states. [2025-03-16 20:06:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62673 to 58911. [2025-03-16 20:06:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7110401663078179) internal successors, (92184), 55938 states have internal predecessors, (92184), 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) [2025-03-16 20:06:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112966 transitions. [2025-03-16 20:06:54,467 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112966 transitions. Word has length 131 [2025-03-16 20:06:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:54,467 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112966 transitions. [2025-03-16 20:06:54,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112966 transitions. [2025-03-16 20:06:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:06:54,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:54,485 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] [2025-03-16 20:06:54,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:06:54,485 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:54,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1623019379, now seen corresponding path program 1 times [2025-03-16 20:06:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405008912] [2025-03-16 20:06:54,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:54,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:06:54,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:06:54,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:54,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:54,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:54,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405008912] [2025-03-16 20:06:54,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405008912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:54,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422683424] [2025-03-16 20:06:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:54,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:54,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:54,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:54,564 INFO L87 Difference]: Start difference. First operand 58911 states and 112966 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:06:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:58,025 INFO L93 Difference]: Finished difference Result 133198 states and 267048 transitions. [2025-03-16 20:06:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:06:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:58,442 INFO L225 Difference]: With dead ends: 133198 [2025-03-16 20:06:58,442 INFO L226 Difference]: Without dead ends: 76423 [2025-03-16 20:06:58,675 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 [2025-03-16 20:06:58,676 INFO L435 NwaCegarLoop]: 4280 mSDtfsCounter, 4550 mSDsluCounter, 8436 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:58,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4567 Valid, 12716 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:06:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76423 states. [2025-03-16 20:07:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76423 to 58911. [2025-03-16 20:07:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7086457791966738) internal successors, (92055), 55938 states have internal predecessors, (92055), 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) [2025-03-16 20:07:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112837 transitions. [2025-03-16 20:07:01,621 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112837 transitions. Word has length 131 [2025-03-16 20:07:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:01,621 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112837 transitions. [2025-03-16 20:07:01,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:07:01,621 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112837 transitions. [2025-03-16 20:07:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:07:01,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:01,635 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] [2025-03-16 20:07:01,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:07:01,635 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:01,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 424284114, now seen corresponding path program 1 times [2025-03-16 20:07:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724622809] [2025-03-16 20:07:01,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:01,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:01,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:07:01,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:07:01,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:01,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724622809] [2025-03-16 20:07:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724622809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:01,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:07:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370414557] [2025-03-16 20:07:01,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:01,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:07:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:01,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:07:01,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:07:01,709 INFO L87 Difference]: Start difference. First operand 58911 states and 112837 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:07:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:04,983 INFO L93 Difference]: Finished difference Result 131009 states and 262412 transitions. [2025-03-16 20:07:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:07:04,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:05,245 INFO L225 Difference]: With dead ends: 131009 [2025-03-16 20:07:05,245 INFO L226 Difference]: Without dead ends: 74234 [2025-03-16 20:07:05,355 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 [2025-03-16 20:07:05,356 INFO L435 NwaCegarLoop]: 4277 mSDtfsCounter, 4547 mSDsluCounter, 8431 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 12708 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:05,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 12708 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:07:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74234 states. [2025-03-16 20:07:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74234 to 58911. [2025-03-16 20:07:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7062513920855298) internal successors, (91926), 55938 states have internal predecessors, (91926), 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) [2025-03-16 20:07:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112708 transitions. [2025-03-16 20:07:08,400 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112708 transitions. Word has length 131 [2025-03-16 20:07:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:08,400 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112708 transitions. [2025-03-16 20:07:08,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2025-03-16 20:07:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112708 transitions. [2025-03-16 20:07:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:07:08,417 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:08,417 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] [2025-03-16 20:07:08,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:07:08,417 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:08,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash 939804563, now seen corresponding path program 1 times [2025-03-16 20:07:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176824690] [2025-03-16 20:07:08,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:08,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:07:08,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:07:08,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:08,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:08,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176824690] [2025-03-16 20:07:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176824690] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790758120] [2025-03-16 20:07:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:08,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:08,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:08,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:08,502 INFO L87 Difference]: Start difference. First operand 58911 states and 112708 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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)