./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.05.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_label47+token_ring.05.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 eb02e23cacfa9dfcb6b910fbdb7f96346be741b0dc92ba35a0c3f2fde349f0cf --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:05:21,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:05:21,214 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:05:21,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:05:21,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:05:21,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:05:21,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:05:21,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:05:21,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:05:21,237 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:05:21,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:05:21,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:05:21,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:05:21,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:05:21,237 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:05:21,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:05:21,238 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:05:21,239 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:05:21,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:05:21,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:05:21,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:05:21,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:05:21,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:05:21,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:05:21,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:05:21,240 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 -> eb02e23cacfa9dfcb6b910fbdb7f96346be741b0dc92ba35a0c3f2fde349f0cf [2025-03-16 20:05:21,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:05:21,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:05:21,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:05:21,467 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:05:21,467 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:05:21,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.05.cil-1.c [2025-03-16 20:05:22,639 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2700f098e/514c4b45e98b4dd6a0be45607d0f00f6/FLAG041186191 [2025-03-16 20:05:23,275 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:05:23,276 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.05.cil-1.c [2025-03-16 20:05:23,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2700f098e/514c4b45e98b4dd6a0be45607d0f00f6/FLAG041186191 [2025-03-16 20:05:23,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2700f098e/514c4b45e98b4dd6a0be45607d0f00f6 [2025-03-16 20:05:23,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:05:23,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:05:23,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:05:23,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:05:23,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:05:23,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:05:23" (1/1) ... [2025-03-16 20:05:23,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d899db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:23, skipping insertion in model container [2025-03-16 20:05:23,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:05:23" (1/1) ... [2025-03-16 20:05:23,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:05:24,496 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_label47+token_ring.05.cil-1.c[377612,377625] [2025-03-16 20:05:24,523 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_label47+token_ring.05.cil-1.c[383339,383352] [2025-03-16 20:05:24,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:05:24,692 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:05:25,232 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_label47+token_ring.05.cil-1.c[377612,377625] [2025-03-16 20:05:25,238 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_label47+token_ring.05.cil-1.c[383339,383352] [2025-03-16 20:05:25,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:05:25,298 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:05:25,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25 WrapperNode [2025-03-16 20:05:25,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:05:25,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:05:25,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:05:25,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:05:25,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,612 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12786 [2025-03-16 20:05:25,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:05:25,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:05:25,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:05:25,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:05:25,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,728 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 20:05:25,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,886 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:05:25,970 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:05:25,970 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:05:25,971 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:05:25,971 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (1/1) ... [2025-03-16 20:05:25,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:05:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:05:25,999 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 20:05:26,005 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 20:05:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:05:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:05:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:05:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:05:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:05:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:05:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:05:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:05:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:05:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:05:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:05:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:05:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:05:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:05:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:05:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:05:26,111 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:05:26,113 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:05:32,176 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:05:32,177 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:05:32,177 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:05:32,177 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:05:32,178 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:05:32,179 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:05:32,179 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:05:32,446 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2025-03-16 20:05:32,447 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:05:32,534 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:05:32,535 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:05:32,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:05:32 BoogieIcfgContainer [2025-03-16 20:05:32,538 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:05:32,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:05:32,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:05:32,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:05:32,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:05:23" (1/3) ... [2025-03-16 20:05:32,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d06db84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:05:32, skipping insertion in model container [2025-03-16 20:05:32,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:25" (2/3) ... [2025-03-16 20:05:32,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d06db84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:05:32, skipping insertion in model container [2025-03-16 20:05:32,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:05:32" (3/3) ... [2025-03-16 20:05:32,549 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.05.cil-1.c [2025-03-16 20:05:32,572 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:05:32,579 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label47+token_ring.05.cil-1.c that has 7 procedures, 2316 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-03-16 20:05:32,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:05:32,759 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;@3949508b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:05:32,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:05:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-16 20:05:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:32,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:32,783 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] [2025-03-16 20:05:32,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:32,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2125957295, now seen corresponding path program 1 times [2025-03-16 20:05:32,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:32,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60800898] [2025-03-16 20:05:32,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:32,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:32,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:32,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:32,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:32,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:33,176 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 20:05:33,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:33,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60800898] [2025-03-16 20:05:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60800898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347845132] [2025-03-16 20:05:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:33,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:33,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:33,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:33,205 INFO L87 Difference]: Start difference. First operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 20:05:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:33,706 INFO L93 Difference]: Finished difference Result 4824 states and 8974 transitions. [2025-03-16 20:05:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:05:33,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:33,732 INFO L225 Difference]: With dead ends: 4824 [2025-03-16 20:05:33,732 INFO L226 Difference]: Without dead ends: 2511 [2025-03-16 20:05:33,743 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 20:05:33,745 INFO L435 NwaCegarLoop]: 4197 mSDtfsCounter, 4499 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 12707 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:33,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4512 Valid, 12707 Invalid, 369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2025-03-16 20:05:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2496. [2025-03-16 20:05:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8284313725490196) internal successors, (4476), 2451 states have internal predecessors, (4476), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:05:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4543 transitions. [2025-03-16 20:05:33,867 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4543 transitions. Word has length 91 [2025-03-16 20:05:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:33,867 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4543 transitions. [2025-03-16 20:05:33,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 20:05:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4543 transitions. [2025-03-16 20:05:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:33,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:33,870 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] [2025-03-16 20:05:33,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:05:33,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:33,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322797, now seen corresponding path program 1 times [2025-03-16 20:05:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981414848] [2025-03-16 20:05:33,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:33,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:33,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:33,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:33,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:33,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:34,026 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 20:05:34,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981414848] [2025-03-16 20:05:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981414848] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:34,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:34,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:34,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566052764] [2025-03-16 20:05:34,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:34,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:34,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:34,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:34,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:34,028 INFO L87 Difference]: Start difference. First operand 2496 states and 4543 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:34,289 INFO L93 Difference]: Finished difference Result 2896 states and 5179 transitions. [2025-03-16 20:05:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:34,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:34,302 INFO L225 Difference]: With dead ends: 2896 [2025-03-16 20:05:34,302 INFO L226 Difference]: Without dead ends: 2532 [2025-03-16 20:05:34,305 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 20:05:34,305 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4342 mSDsluCounter, 8273 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 12452 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:34,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 12452 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:05:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2025-03-16 20:05:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2496. [2025-03-16 20:05:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8276143790849673) internal successors, (4474), 2451 states have internal predecessors, (4474), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:05:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4541 transitions. [2025-03-16 20:05:34,376 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4541 transitions. Word has length 91 [2025-03-16 20:05:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:34,377 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4541 transitions. [2025-03-16 20:05:34,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4541 transitions. [2025-03-16 20:05:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:34,379 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:34,379 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] [2025-03-16 20:05:34,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:05:34,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:34,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash -310507598, now seen corresponding path program 1 times [2025-03-16 20:05:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:34,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871097282] [2025-03-16 20:05:34,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:34,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:34,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:34,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:34,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:34,624 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 20:05:34,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:34,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871097282] [2025-03-16 20:05:34,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871097282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:34,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127027718] [2025-03-16 20:05:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:34,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:34,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:34,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:34,627 INFO L87 Difference]: Start difference. First operand 2496 states and 4541 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:35,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:35,063 INFO L93 Difference]: Finished difference Result 3090 states and 5474 transitions. [2025-03-16 20:05:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:35,076 INFO L225 Difference]: With dead ends: 3090 [2025-03-16 20:05:35,076 INFO L226 Difference]: Without dead ends: 2726 [2025-03-16 20:05:35,078 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 20:05:35,081 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4481 mSDsluCounter, 13004 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 17342 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:35,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4494 Valid, 17342 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2025-03-16 20:05:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2667. [2025-03-16 20:05:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2598 states have (on average 1.811008468052348) internal successors, (4705), 2602 states have internal predecessors, (4705), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2025-03-16 20:05:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4803 transitions. [2025-03-16 20:05:35,141 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4803 transitions. Word has length 91 [2025-03-16 20:05:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:35,141 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4803 transitions. [2025-03-16 20:05:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4803 transitions. [2025-03-16 20:05:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:35,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:35,143 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] [2025-03-16 20:05:35,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:05:35,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:35,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash 556544627, now seen corresponding path program 1 times [2025-03-16 20:05:35,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:35,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197404186] [2025-03-16 20:05:35,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:35,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:35,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:35,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:35,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:35,269 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 20:05:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:35,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197404186] [2025-03-16 20:05:35,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197404186] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:35,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:35,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:35,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461391338] [2025-03-16 20:05:35,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:35,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:35,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:35,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:35,271 INFO L87 Difference]: Start difference. First operand 2667 states and 4803 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:35,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:35,713 INFO L93 Difference]: Finished difference Result 3628 states and 6309 transitions. [2025-03-16 20:05:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:35,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:35,728 INFO L225 Difference]: With dead ends: 3628 [2025-03-16 20:05:35,729 INFO L226 Difference]: Without dead ends: 3093 [2025-03-16 20:05:35,732 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 20:05:35,733 INFO L435 NwaCegarLoop]: 4334 mSDtfsCounter, 4476 mSDsluCounter, 12992 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 17326 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:35,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 17326 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2025-03-16 20:05:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3028. [2025-03-16 20:05:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2915 states have (on average 1.7831903945111491) internal successors, (5198), 2923 states have internal predecessors, (5198), 75 states have call successors, (75), 30 states have call predecessors, (75), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2025-03-16 20:05:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5364 transitions. [2025-03-16 20:05:35,819 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5364 transitions. Word has length 91 [2025-03-16 20:05:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:35,820 INFO L471 AbstractCegarLoop]: Abstraction has 3028 states and 5364 transitions. [2025-03-16 20:05:35,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5364 transitions. [2025-03-16 20:05:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:35,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:35,821 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] [2025-03-16 20:05:35,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:05:35,822 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:35,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1000156050, now seen corresponding path program 1 times [2025-03-16 20:05:35,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:35,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955535540] [2025-03-16 20:05:35,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:35,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:35,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:35,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:35,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:35,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:35,928 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 20:05:35,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955535540] [2025-03-16 20:05:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955535540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:35,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:35,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226519278] [2025-03-16 20:05:35,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:35,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:35,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:35,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:35,931 INFO L87 Difference]: Start difference. First operand 3028 states and 5364 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:36,492 INFO L93 Difference]: Finished difference Result 4775 states and 8124 transitions. [2025-03-16 20:05:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:36,511 INFO L225 Difference]: With dead ends: 4775 [2025-03-16 20:05:36,511 INFO L226 Difference]: Without dead ends: 3879 [2025-03-16 20:05:36,516 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 20:05:36,518 INFO L435 NwaCegarLoop]: 4331 mSDtfsCounter, 4471 mSDsluCounter, 12983 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:36,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 17314 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:05:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2025-03-16 20:05:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3801. [2025-03-16 20:05:36,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3594 states have (on average 1.7434613244296049) internal successors, (6266), 3616 states have internal predecessors, (6266), 131 states have call successors, (131), 54 states have call predecessors, (131), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2025-03-16 20:05:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 6592 transitions. [2025-03-16 20:05:36,669 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 6592 transitions. Word has length 91 [2025-03-16 20:05:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:36,670 INFO L471 AbstractCegarLoop]: Abstraction has 3801 states and 6592 transitions. [2025-03-16 20:05:36,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 6592 transitions. [2025-03-16 20:05:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:36,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:36,676 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] [2025-03-16 20:05:36,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:05:36,676 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:36,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash 44634771, now seen corresponding path program 1 times [2025-03-16 20:05:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:36,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236631988] [2025-03-16 20:05:36,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:36,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:36,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:36,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:36,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:36,792 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 20:05:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236631988] [2025-03-16 20:05:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236631988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328457520] [2025-03-16 20:05:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:36,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:36,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:36,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:36,794 INFO L87 Difference]: Start difference. First operand 3801 states and 6592 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:37,411 INFO L93 Difference]: Finished difference Result 7254 states and 12166 transitions. [2025-03-16 20:05:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:37,442 INFO L225 Difference]: With dead ends: 7254 [2025-03-16 20:05:37,443 INFO L226 Difference]: Without dead ends: 5585 [2025-03-16 20:05:37,451 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 20:05:37,452 INFO L435 NwaCegarLoop]: 4328 mSDtfsCounter, 4466 mSDsluCounter, 12974 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:37,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 17302 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:05:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2025-03-16 20:05:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5482. [2025-03-16 20:05:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 5069 states have (on average 1.699348984020517) internal successors, (8614), 5137 states have internal predecessors, (8614), 243 states have call successors, (243), 102 states have call predecessors, (243), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2025-03-16 20:05:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 9356 transitions. [2025-03-16 20:05:37,686 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 9356 transitions. Word has length 91 [2025-03-16 20:05:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:37,687 INFO L471 AbstractCegarLoop]: Abstraction has 5482 states and 9356 transitions. [2025-03-16 20:05:37,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 9356 transitions. [2025-03-16 20:05:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:37,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:37,691 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] [2025-03-16 20:05:37,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:05:37,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:37,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2064398478, now seen corresponding path program 1 times [2025-03-16 20:05:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745562764] [2025-03-16 20:05:37,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:37,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:37,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:37,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:37,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:37,796 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 20:05:37,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745562764] [2025-03-16 20:05:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745562764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:37,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155202238] [2025-03-16 20:05:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:37,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:37,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:37,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:37,798 INFO L87 Difference]: Start difference. First operand 5482 states and 9356 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:38,461 INFO L93 Difference]: Finished difference Result 13237 states and 22329 transitions. [2025-03-16 20:05:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:38,509 INFO L225 Difference]: With dead ends: 13237 [2025-03-16 20:05:38,509 INFO L226 Difference]: Without dead ends: 9887 [2025-03-16 20:05:38,520 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 20:05:38,520 INFO L435 NwaCegarLoop]: 4323 mSDtfsCounter, 4607 mSDsluCounter, 12954 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4626 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:38,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4626 Valid, 17277 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:05:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2025-03-16 20:05:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9147. [2025-03-16 20:05:38,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9147 states, 8284 states have (on average 1.6670690487687108) internal successors, (13810), 8498 states have internal predecessors, (13810), 451 states have call successors, (451), 198 states have call predecessors, (451), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2025-03-16 20:05:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 15736 transitions. [2025-03-16 20:05:38,816 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 15736 transitions. Word has length 91 [2025-03-16 20:05:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:38,817 INFO L471 AbstractCegarLoop]: Abstraction has 9147 states and 15736 transitions. [2025-03-16 20:05:38,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 15736 transitions. [2025-03-16 20:05:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:38,824 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:38,824 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] [2025-03-16 20:05:38,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:05:38,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:38,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1746893491, now seen corresponding path program 1 times [2025-03-16 20:05:38,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:38,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269195140] [2025-03-16 20:05:38,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:38,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:38,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:38,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:38,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:38,918 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 20:05:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269195140] [2025-03-16 20:05:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269195140] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646559180] [2025-03-16 20:05:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:38,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:38,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:38,920 INFO L87 Difference]: Start difference. First operand 9147 states and 15736 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:39,684 INFO L93 Difference]: Finished difference Result 25082 states and 44155 transitions. [2025-03-16 20:05:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:39,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:39,758 INFO L225 Difference]: With dead ends: 25082 [2025-03-16 20:05:39,758 INFO L226 Difference]: Without dead ends: 18067 [2025-03-16 20:05:39,787 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 20:05:39,789 INFO L435 NwaCegarLoop]: 4316 mSDtfsCounter, 4545 mSDsluCounter, 12935 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 17251 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:39,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 17251 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18067 states. [2025-03-16 20:05:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18067 to 17077. [2025-03-16 20:05:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6458333333333333) internal successors, (24964), 15836 states have internal predecessors, (24964), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:05:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30762 transitions. [2025-03-16 20:05:40,541 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30762 transitions. Word has length 91 [2025-03-16 20:05:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:40,542 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30762 transitions. [2025-03-16 20:05:40,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:40,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30762 transitions. [2025-03-16 20:05:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:40,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:40,551 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] [2025-03-16 20:05:40,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:05:40,552 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:40,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1500580404, now seen corresponding path program 1 times [2025-03-16 20:05:40,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:40,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237174735] [2025-03-16 20:05:40,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:40,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:40,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:40,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:40,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:40,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:40,613 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 20:05:40,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:40,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237174735] [2025-03-16 20:05:40,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237174735] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:40,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:40,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:40,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028855456] [2025-03-16 20:05:40,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:40,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:40,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:40,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:40,614 INFO L87 Difference]: Start difference. First operand 17077 states and 30762 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:41,566 INFO L93 Difference]: Finished difference Result 34946 states and 65430 transitions. [2025-03-16 20:05:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:41,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:41,648 INFO L225 Difference]: With dead ends: 34946 [2025-03-16 20:05:41,649 INFO L226 Difference]: Without dead ends: 20001 [2025-03-16 20:05:41,694 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 20:05:41,694 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4330 mSDsluCounter, 8238 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 12400 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:41,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 12400 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:05:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20001 states. [2025-03-16 20:05:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20001 to 17077. [2025-03-16 20:05:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6415479957805907) internal successors, (24899), 15836 states have internal predecessors, (24899), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:05:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30697 transitions. [2025-03-16 20:05:42,534 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30697 transitions. Word has length 91 [2025-03-16 20:05:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:42,534 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30697 transitions. [2025-03-16 20:05:42,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30697 transitions. [2025-03-16 20:05:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:42,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:42,544 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] [2025-03-16 20:05:42,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:05:42,544 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:42,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash -169933165, now seen corresponding path program 1 times [2025-03-16 20:05:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:42,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744325786] [2025-03-16 20:05:42,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:42,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:42,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:42,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:42,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:42,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:42,614 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 20:05:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744325786] [2025-03-16 20:05:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744325786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:42,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:42,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027618301] [2025-03-16 20:05:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:42,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:42,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:42,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:42,616 INFO L87 Difference]: Start difference. First operand 17077 states and 30697 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:43,338 INFO L93 Difference]: Finished difference Result 34215 states and 63838 transitions. [2025-03-16 20:05:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:43,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:43,414 INFO L225 Difference]: With dead ends: 34215 [2025-03-16 20:05:43,414 INFO L226 Difference]: Without dead ends: 19270 [2025-03-16 20:05:43,450 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 20:05:43,450 INFO L435 NwaCegarLoop]: 4159 mSDtfsCounter, 4327 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 12392 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:43,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 12392 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:05:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19270 states. [2025-03-16 20:05:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19270 to 17077. [2025-03-16 20:05:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.637262658227848) internal successors, (24834), 15836 states have internal predecessors, (24834), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:05:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30632 transitions. [2025-03-16 20:05:44,214 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30632 transitions. Word has length 91 [2025-03-16 20:05:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:44,215 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30632 transitions. [2025-03-16 20:05:44,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30632 transitions. [2025-03-16 20:05:44,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:44,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:44,224 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] [2025-03-16 20:05:44,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:05:44,224 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:44,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash -778010028, now seen corresponding path program 1 times [2025-03-16 20:05:44,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:44,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631214879] [2025-03-16 20:05:44,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:44,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:44,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:44,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:44,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:44,299 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 20:05:44,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:44,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631214879] [2025-03-16 20:05:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631214879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517455955] [2025-03-16 20:05:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:44,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:44,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:44,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:44,302 INFO L87 Difference]: Start difference. First operand 17077 states and 30632 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:46,267 INFO L93 Difference]: Finished difference Result 48626 states and 93277 transitions. [2025-03-16 20:05:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 20:05:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:46,441 INFO L225 Difference]: With dead ends: 48626 [2025-03-16 20:05:46,441 INFO L226 Difference]: Without dead ends: 33681 [2025-03-16 20:05:46,499 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 20:05:46,500 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4443 mSDsluCounter, 12898 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 17201 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:46,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 17201 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33681 states. [2025-03-16 20:05:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33681 to 33084. [2025-03-16 20:05:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33084 states, 28629 states have (on average 1.6048761745083657) internal successors, (45946), 30691 states have internal predecessors, (45946), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2025-03-16 20:05:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33084 states to 33084 states and 65568 transitions. [2025-03-16 20:05:48,631 INFO L78 Accepts]: Start accepts. Automaton has 33084 states and 65568 transitions. Word has length 91 [2025-03-16 20:05:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:48,631 INFO L471 AbstractCegarLoop]: Abstraction has 33084 states and 65568 transitions. [2025-03-16 20:05:48,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 20:05:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 33084 states and 65568 transitions. [2025-03-16 20:05:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:05:48,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:48,649 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] [2025-03-16 20:05:48,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:05:48,649 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:48,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1003489907, now seen corresponding path program 1 times [2025-03-16 20:05:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:48,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199580172] [2025-03-16 20:05:48,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:48,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:05:48,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:05:48,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:48,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:48,687 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 20:05:48,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:48,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199580172] [2025-03-16 20:05:48,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199580172] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:48,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:48,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:05:48,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824965124] [2025-03-16 20:05:48,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:48,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:05:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:48,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:05:48,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:05:48,689 INFO L87 Difference]: Start difference. First operand 33084 states and 65568 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:51,286 INFO L93 Difference]: Finished difference Result 94467 states and 189396 transitions. [2025-03-16 20:05:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:51,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:05:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:51,621 INFO L225 Difference]: With dead ends: 94467 [2025-03-16 20:05:51,621 INFO L226 Difference]: Without dead ends: 63516 [2025-03-16 20:05:51,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:05:51,736 INFO L435 NwaCegarLoop]: 4503 mSDtfsCounter, 4464 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 8935 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:51,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 8935 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:05:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63516 states. [2025-03-16 20:05:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63516 to 63387. [2025-03-16 20:05:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63387 states, 54483 states have (on average 1.5828974175430868) internal successors, (86241), 58734 states have internal predecessors, (86241), 3234 states have call successors, (3234), 1548 states have call predecessors, (3234), 5668 states have return successors, (35875), 3232 states have call predecessors, (35875), 3234 states have call successors, (35875) [2025-03-16 20:05:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63387 states to 63387 states and 125350 transitions. [2025-03-16 20:05:55,961 INFO L78 Accepts]: Start accepts. Automaton has 63387 states and 125350 transitions. Word has length 91 [2025-03-16 20:05:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:55,962 INFO L471 AbstractCegarLoop]: Abstraction has 63387 states and 125350 transitions. [2025-03-16 20:05:55,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 63387 states and 125350 transitions. [2025-03-16 20:05:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 20:05:56,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:56,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:05:56,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:05:56,037 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:56,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash -282382986, now seen corresponding path program 1 times [2025-03-16 20:05:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891760650] [2025-03-16 20:05:56,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:56,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:05:56,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:05:56,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:56,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 20:05:56,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:56,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891760650] [2025-03-16 20:05:56,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891760650] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:05:56,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080271177] [2025-03-16 20:05:56,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:56,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:05:56,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:05:56,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:05:56,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 20:05:56,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:05:56,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:05:56,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:56,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:56,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:05:56,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:05:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 20:05:56,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:05:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080271177] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:56,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:05:56,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:05:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095680811] [2025-03-16 20:05:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:56,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:05:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:56,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:05:56,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:56,278 INFO L87 Difference]: Start difference. First operand 63387 states and 125350 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:06:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:01,944 INFO L93 Difference]: Finished difference Result 184604 states and 367582 transitions. [2025-03-16 20:06:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2025-03-16 20:06:01,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:02,663 INFO L225 Difference]: With dead ends: 184604 [2025-03-16 20:06:02,663 INFO L226 Difference]: Without dead ends: 123350 [2025-03-16 20:06:02,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:02,807 INFO L435 NwaCegarLoop]: 4246 mSDtfsCounter, 4200 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:02,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 4508 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:06:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123350 states.